Lawn mower catchers only. Grass Catcher Full Indicator

Grass Catcher Full Indicator

About: Find more of what I do on my homepage. but no matter where you go, remember to Be Inspired! About Dominic Bender »

First of, I saw this on a commercially available lawn mower a while back. The one I have now does not have it, and I found that this makes me ignore when the bag is full way too often. So I designed this!

The basic idea is that the lawn mower produces a lot of air flow as it propells grass into the catcher. While there is empty space, that air flow will keep the flap up. As soon as the space inside the box is filled with grass, the air flow will not be enough to keep the flap raised, and as it drops you can tell that the box needs to be emptied.

This is meant to go on the plastic lid or top of your lawn mower‘s grass catcher, and it will notify you whenever that box is full and needs to be emptied.

You will need either a 3D printer (and the experience to use it) or some fiddling with wood and stuff to make your own (outside of but adjacent to the scope of this ‘Ible).


Here are the materials you’ll need:

  • 3D filament. to print with. Like I said, you can use wood, or plastic, but that means to take the general idea and run with it, away from the direction of this ‘Ible. At least for a little bit. Side note, I used PLA. Because that’s how I mow (sorry).
  • 3D filament. to act as a hinge pin. You can substitute this with any thin cylindrical object, like a nail or a skewer.
  • mesh. I used a metal mesh (can be seen in step 2) because I had it on hand. The idea is to keep grass from clogging up the mechanism. You can easily print some, but I did not include it in this because it would prevent me to put the lid in.
  • screws and nuts. to fasten the display to the lawnmower. I used M4 (I think), but anything goes as long as it fits the holes.

And these tools are required, although there are variations:

  • 3D printer. to turn the filament into the shapes coded in the files below.
  • drill. generally a power tool, but a hand crank works as well if you are into that kind of thing.
  • drill bit sized for the big hole. that would be a forstner or spade bit of 40mm diameter.
  • drill bit sized for the screw holes. in this case that’s 4mm, and I like using brad point bits for plastic.
  • Alternatively: a pointy piece of metal and a lighter. beware, there’s a risk of burning yourself or setting things on fire with this, albeit a small one. The idea is to heat up the tip of something like an awl and gently melt your way through the plastic. That is what I did, but you do you!
  • something to fasten the hardware. pliers, wrenches or spanners that fit the dimensions of your fastening hardware of choice (see above).

Extra note on printing these: You do not need the drill guide to assemble the display, but it helps aim the big drill right in relation to the smaller holes. You can just drill a big hole first and then align the case.

Step 1: Make Holes

You need five holes to mount this on your lawn mower grass box. one for air flow and four for the screws. There are two ways to go about this (three if you count flying by the seat of your pants, hoping things will align anyway. They won’t. Believe me.) The only requirement is that the spot you screw this to is flat. no bents, no dents, as they would limit the functionality of this gauge by allowing air to take different ways out.

The first way: You can print the drill guide from the previous step, place it on the grass catcher, and use it to mark the positions of the holes using the appropriate drill bits. Then use these drill bits to create the corresponding holes. Be careful when drilling through plastic. Going too hard might cause breaks and overall headache. If necessary, place a piece of wood on the other side of where you are drilling for additional support and safety.

lawn, mower, catchers, only

The second way: You do not need the drill guide for this one. Use the large bit to drill the hole in a position where you imagine the other screws will fit around it. Eyeball it, but I recommend checking your eyeballing skills using the case. Drill that hole, then place the case and align it. Then you can use the holes in the case itself as guides for the remaining four holes.

As mentioned in the supplies section, remember that you can make the mounting holes with a piece of metal heates with a lighter, at least in most plastics.

Step 2: Assembly

Sorry for the lack of pictures. I installed this off the grid and might have forgotten that I had my phone on me most of the time. Let me know whether you need additional pictures!

But this one is quite easy! Insert the lid into the case and push a piece of filament through the hole. Make sure the flap can move easily in its place.

Then place whatever mesh you want to use against the bottom of the case to make sure your screws can pass through it. For a metal mesh like the one I used, you might need to use an awl to widen the holes. For a plastic screen, like fly screen, you can just punch them through.

Place the case with the mesh on box and align the holes. Insert the screws and tighten the nuts on the other side (or insert them from the inside and tighten the nuts outside. Works both ways, but this way might cause less grass to catch on the inside.

Step 3: Mow!

All that’s left to do is to spin up the blades and fill the bag with some grass. As soon as it is filled up, the flap should come down and tell you to empty your grass catcher. You might have to tweak the flap, either by adding a (very tiny) weight to it, or filing the edges down with some sandpaper to make sure it drops easily.

Also, there’s a secret! There’s STOP embossed into the inside of the thing, so in theory you should see that once the lid drops. Since I printed mine in black that doesn’t work, and I have yet to go over it with some kind of visible paint to make it stick out. But guess what. seeing the flap go down has been enough for me to tell when to empty the box!

Thanks for checking out this Instructable, I hope it brings you joy and inspires you! Let me know in the Комментарии и мнения владельцев, and share when you make this!

As always, remember to Be Inspired!

Grass Collection

Our grass collection accessories are built to stand up to hard use season after season. They’re engineered to fit Wright mowers as well as other professional brands.

Origins of the Grass Gobbler Before Bill Wright invented the first stand-on mower, the Stander, he invented and began manufacturing welded steel grass catchers that could withstand the rigors of commercial use.

Grass Gobbler™

With a simple all-steel construction, the Grass Gobbler has proven itself to be the most durable catcher ever made.

  • Designed for continuous airflow and high-density packing
  • Durable all steel construction
  • Available in small (2.0 cu. ft.), regular (3.3 cu. ft.) and jumbo (4.3 cu. ft.) capacities
  • Fits most professional brands

Use the chart below to find which Grass Gobbler is compatible with your mower.

For a more detailed chart and with listings of older mowers, go to the ‘Gobbler Identification Chart’ in the Accessory Parts Usage Charts Section below.

Leaf Gobbler™

WrightVac™ Powered Bagger

The Ultimate Bagger for the Ultimate Mower. The WrightVac system is designed to meet the demanding needs you face everyday as a professional landscaper. Our goal was to create a bagger system to match the performance of the mower. This means the WrightVac was engineered to produce enough airflow to prevent clogging even when mowing at max speed of 13mph; which makes it ideal for both the ZX series and the ZK.

In addition, the WrightVac shares the same heavy-duty low low-maintenance elements as the ZXT resulting in a truly commercial-grade powered bagger.

  • The kit includes: Blower, 3 Bin Bagger, Front Hitch-Receiver and Weight Kit
  • Deck compatible Belt kit to be purchased separately
  • WrightVac’s purchased same date or later than ZXT, will share mower warranty
  • Holds up to 12 bushels of grass

Use the table below to get the correct Wright part numbers.

Powered Grass Collection System

Designed specifically for Wright Z and ZTO models, the powered grass collection system holds up to 8 bushels for 48” models, 12 bushels for 61” models, and your choice of 8 or 12 bushel systems for 52” models. The rear wheel motors can be moved fore and aft to maintain proper weight balance.

  • Designed specifically for Wright Z and ZTO models
  • Rear wheel motors can be moved fore and aft to maintain proper weight balance
  • Holds up to 8 bushels for 48” models, 12 bushels for 61” models, and your choice of 8 or 12 bushel systems for 52” models

The table below will give you the correct Wright part number based on your mower cutter deck.

How to Attach a Grass Catcher to your Lawnmower?

A lawn mowing routine not only involves mowing but making sure that the lawn is free of visible grass clippings as well. Just mowing is fun, but having to walk the entire lawn one more time to remove the mess seems like a hassle. Cleaning the area after mowing is especially a major problem for people with big yards. Using a grass catcher attached to your mower will collect all the grass clippings as you mow, saving you the trouble of cleaning the mess afterward. There are different types of grass catchers, depending on your mower type and situation. Many sit on lawnmowers already have a fixed collection bag on the back, others can use a removable solution on the back or side. And there are also solutions that you can town on the back of the lawn tractor. Whatever the solution, you can easily attach a grass catcher to your riding or push mower yourself.

How to Attach a Grass Catcher to your Lawnmower:

Attaching a grass catcher to a lawnmower is relatively easy but depends on the type of lawnmower and the type of grass catcher.

lawn, mower, catchers, only
  • Attaching a rear grass catcher to a riding mower involves three main steps. First of all, you need to attach a bracket for holding the catcher bag to your lawnmower. After that, place the catcher bag on the bracket, locking it in place. Finally, connect the catcher bag to the side-discharge of your riding mower using a tube.
  • To attach a rear grass catcher to your push mower, open the rear discharge cap. Then open/snap the catcher bag’s hooks. Attach the catcher bag to your push mower’s rear discharge, locking it in place with the hooks.
  • Attaching a side grass catcher to a push mower is a bit different. First of all, locate the install area for the side discharge with all its hooks and clamps. Then install the discharge chute and assemble the catcher bag. After that, install the catcher bag, connect it to the side-discharge, and locate it in place with the hooks and clamps.

Attaching a grass catcher to any lawnmower will take you 30 to 45 minutes max. Following the step by step guide will make it much simpler for you. So, let’s go through the step by step procedures for the three categories mentioned above.

  • 1 Things to Consider before Starting the Grass Catcher Installation:
  • 2 Attaching a Rear Grass Catcher to your Riding Mower:

Scotts Classic Reel Mower: Attaching a Grasscatcher

  • 2.1 Step 1: Preparation:
  • 2.2 Step 2: Install the Bracket:
  • 2.3 Step 3: Install the Bag Attachment and the Bags:
  • 2.4 Step 4: Connect the Catcher to the Side Discharge:
  • 3.1 Step 1: Preparation:
  • 3.2 Step 2: Locate the Installation Area:
  • 3.3 Step 3: Assemble the Grass Catcher:
  • 3.4 Step 4: Install the Grass Catcher:
  • 4.1 Step 1: Preparation:
  • 4.2 Step 2: Install a Side Discharge Chute:
  • 4.3 Step 3: Assemble the Grass Catcher:
  • 4.4 Step 4: Install the Grass Catcher:

Things to Consider before Starting the Grass Catcher Installation:

Before starting with the grass catcher installation, you first have to consider some things:

  • Where to attach the grass catcher: All lawnmowers have designated areas for attaching new attachments. For different makes and models, these areas are in different locations. To find the right area for the right attachment, consult the manufacturer’s manual that came with the mower or attachment where possible.
  • Safety first: Some of the attachments are installed close to the blade. It is a good idea to wear protective gloves to avoid injury due to sharp edges in those circumstances.
  • Tools: Keep the basic tools, such as a socket wrench, a screwdriver, and a pair of pliers close to you.

Attaching a Rear Grass Catcher to your Riding Mower:

There are several types of rear grass catchers. Some models are connected to the back of the mower and use the backend discharge. Usually, these are fixed and part of the mower. If your mower uses a side discharge port, you can use a tube to connect a rear grass catcher with the side discharge port. The last type is the one that is towed behind the riding mower or lawn tractor. Those units work separately from the mower and remove the clippings and other debris from the grass. There is no need to mow for this last category. Just driving on the grass at a certain speed is enough.

We will now look at the 2nd type, the rear grass catcher working with a side discharge port. Before starting with the installing, make sure that you have the following things ready:

  • A bracket to hold the catcher bag/bags.
  • The catcher bags you want to install.
  • Nuts or screws for holding the bracket and bags in place.
  • A tube to connect the grass catcher to your mower’s side discharge.
  • A socket wrench.

With these things ready, start the installing procedure:

Step 1: Preparation:

Park your mower on a flat open area and turn it off. Ensure that the parking brake is engaged because you don’t want your mower rolling while you are attaching the catcher. Make sure you have your gloves on.

Step 2: Install the Bracket:

To install the bracket, you first need to attach the bracket screws to your riding mower rear. Locate the area for attaching these screws for your particular mower model. Use a socket wrench to tighten the screws. After the screws are tight in their place, attach the bracket to your mower’s rear with the screws holding it in place.

Step 3: Install the Bag Attachment and the Bags:

The next step is to attach the bag attachment to the bracket and then put it in it. The bag attachment comes with a cotter pin. Remove the cotter pin, and place the attachment in the bracket’s middle. Use a socket wrench to tighten the bolt that locks the bag attachment on the bracket.

After that, put the cotter pin back at its previous location. With this, the bag holding assembly is attached. All you got to do now is to place the bags in the bag attachment.

Step 4: Connect the Catcher to the Side Discharge:

Use a tube to connect the grass catcher to the side-discharge so that the grass debris from the discharge flows straight to the catcher. The tube has two ends. Attach one of its ends to the side discharge, locking it in place with the hooks.

Insert its other end in the hole on the grass catcher, and lock it in place with the two hooks. With this step, the installation procedure is finished.

Make sure that the attachment is firm by applying a jerk to it with your hand. If it wobbles or falls off, it means that the bracket screws or bag attachment nut were not tight. These screws and nuts should be tight so that the catcher doesn’t fall off because of the weight of grass debris.

Attaching a Rear Grass Catcher to your Push Mower:

Follow the step by step guide to attach a rear grass catcher to your push mower.

Step 1: Preparation:

Park your mower on a flat open area and turn it off.

Step 2: Locate the Installation Area:

Locate the area where the catcher assembly will be attached. You can consult the manufacturer’s manual to locate the correct area, but visual inspection would usually be enough. The installation area will have hooks, bolts, or hinges to hold the assembly. Clean this area with a cloth.

Step 3: Assemble the Grass Catcher:

The grass catcher will have two main parts, a bag and a frame for holding the bag. You need to assemble these two parts. The hard part, i.e., the frame should be at the bottom, holding the bag, and the bag’s handle should be pointed upwards so that you can easily grab it.

For the most accurate and clear info on how to assemble the grass catcher, refer to the instructions that came with the catcher. If you do not have it, try to find it on the internet.

Step 4: Install the Grass Catcher:

Uncap the rear discharge of your push mower and attach the catcher to it, holding it in place with hooks, bolts, or clamps.

Make sure that the catcher doesn’t fall off when a force is applied to it. With the catcher firmly in place, your mower is ready for action again.

Attaching a Side Grass Catcher to your Push Mower:

Follow the step by step guide to attach a side grass catcher to your push mower:

Step 1: Preparation:

Park your push mower on a flat open surface and turn it off.

Step 2: Install a Side Discharge Chute:

If your mower doesn’t already have a side discharge chute, attach a new one. For this, first, locate the area for attaching the side discharge chute, uncap the side-discharge area, and then install the chute in this area, holding it in place with its bolts and hooks.

Make sure that the chute is firmly attached.

Step 3: Assemble the Grass Catcher:

Like a rear catcher, a side catcher has two parts, a frame, and a bag. The difference is that for a side catcher, the frame goes inside the bag.

Insert the frame into the catcher bag. The bag has vinyl bindings to hold the frame’s hooks. The catcher’s hard part should be at the bottom, and the handle should be pointing up and outward so that you can grab it easily.

Step 4: Install the Grass Catcher:

Attach the catcher bag’s hanger to the mower’s handle. While attaching the grass catcher to the mower, make sure its opening fits directly with the chute with either a twist or some hooks or clamps to lock it in place.

Ensure that the grass catcher is firmly attached and won’t fall off when a force is applied to it. With this done, your mower is ready to mow again, without spreading grass clippings all over your lawn.

Advantages of Using a Grass Catcher:

The most obvious advantage of using a grass catcher is that it will save you the trouble of cleaning the lawn after you are done mowing.

You can use the grass clippings collected in the catcher to make compost. So, a grass catcher allows you to reuse your lawn’s grass.

Furthermore, a grass catcher can protect your lawn from the spread of disease. It is well known that grass clippings can cause fungus and other problems. With the clippings getting collected in the catcher safely, you won’t have to worry about your lawn’s health.

Final Remarks:

Having to clean your lawn thoroughly after mowing takes effort and time. A grass catcher attached to your mower helps to collect the grass and results in a friendly and clean lawn. There are multiple options, depending on your lawnmower type and situation. Attaching a grass catcher to your mower is not difficult. This blog helps with some guidelines on how to attach a catcher for different kinds of machines.

DIY Leaf Bagger | Ride on Lawnmower Hack

Lawn Mower Parts

Search and shop all the parts you need for your riding lawn equipment and Gator UTV including lawn mower blades, filters, belts, spark plugs, oil, and home maintenance kits.

Find Parts

Search part numbers and John Deere parts diagrams to identify exactly what you need to keep your equipment running smoothly.

Quick Reference Guides

As a John Deere owner, when it’s time to maintain, service or repair your equipment we have easy-to-use information sheets that keep your John Deere equipment running well.

Home Maintenance Kits

Feel confident in tuning up your lawn mower or garden equipment this season with our Home Maintenance Kits. Easily find the right product so you can DIY and save!

Looking for your Serial Number?

Finding your lawn mower’s model number and serial number is as easy as locating the identification tag on your machine. As seen in the example, the model number will be displayed below the MODEL heading (Example: Z235), and the serial number will be underlined on the top-right corner of the tag (Example: 130002).

If you’re looking for the engine number, that can be found directly on the engine itself.

Home and Garden, eat your heart out.

Get the latest on how to care for and enjoy your yard and garden. The articles and videos are informative and the ideas are amazing.

MowerPlus Mobile App

MowerPlus is the app you need to keep your John Deere riding lawn mower running well and your lawn looking great this season. The app tracks and records yard tasks and serves as a one-stop shop for seasonal care tips and maintenance activities. Know your mower and know how you mow with John Deere’s MowerPlus app.

The Right Part. The Right Price.

At John Deere, you get the value of choice for your maintenance and replacement parts for all makes and ages of machines – at any budget.

Genuine Parts

Genuine John Deere Belts Blades are your best choice for your newer machines.

Alternative Parts

Alternative Parts are an economical solution for your John Deere equipment.

The John Deere Easy Change™ 30-Second Oil Change System

Never drain engine oil again.

We’ve changed the oil change. Revolutionized it really. See how fast and easy changing your oil can now be on 100 Series Riding Lawn Tractors with the John Deere Easy Change™ 30-Second Oil Change System. Only from John Deere. Included on the E120, E130, E150, E160, E170, and E180 models.

Step One. Take it off.

Lift the hood. Make sure the engine is cool, then, twist to remove. It’s that simple.

Step Two. Twist and lock.

Grab the new Easy Change™ Canister, twist and lock into place. Make sure the arrow on your Filter System aligns with the arrow on your engine.

Step three. Done.

Close the hood and mow. John Deere recommends the Easy Change™ 30-second Oil Change System every 50 hours or at the end of your mowing season. Don’t drain engine oil ever again.

Draining engine oil is so 2017.

The engine modifications and new technologies are in. The re-envisioned oil filter with a media designed to resist breaking down in oil over time is here. The thousands of hours of testing are done. The end result is an all-in-one, oil and oil filter system like no other. The first of its kind. And thanks to the new John Deere Easy Change™ 30-Second Oil Change System (“System”), you’ll never have to drain the oil from 100 Series Riding Lawn Tractors again.

Here’s why: The new System captures contaminants and recharges your engine with nearly a quart (0.8qt) (0.76 l) of new oil. In fact, this System increases the amount of oil in the engine by nearly 40%. 2 Your engine likes that.

What do you mean, I will never have to drain oil from my engine again? How is that possible? The answer is simple. We have developed a better filtration system and filter design for our 100 Series Riding Lawn Tractors 1. This fully synthetic filter media has greater surface area which increases its capacity to hold harmful contaminants. What’s more, the filter media is designed to resist breaking down in oil over time. Which means you’ll get a cooler running engine. And a cooler running engine and better filtering helps increase engine oil life. John Deere’s recommended oil service for 100 Series Riding Lawn Tractors 1. is to change the System every 50 hours or once a season, whichever comes first. Remember, the System replaces a portion of your engine oil. And that’s plenty.

The System uses John Deere Turf-Gard™ Oil. Using John Deere Turf-Gard™ Oil ensures you are using the exact oil specified by John Deere engineers.

Testing. Testing. Testing. Thanks to thousands of hours of rigorous and extensive testing, you can feel confident your engine will run for years to come.

1 The John Deere Easy Change™ 30-Second Oil Change System is available on E120, E130, E150, E160, E170 and E180 Lawn Tractors today.

2 Compared to similar V-Twin engine models that do not have the John Deere Easy Change™ 30-Second Oil Change System. That includes equivalent Deere 2017 models and 2018 models without the System.

Frequently Asked Questions:

What is new with John Deere Riding Lawn Equipment?

We are excited about the exclusive John Deere Easy Change™ 30 second oil change system. Exclusive to John Deere and only available on certain models of the new 100 Series Lawn Tractors. These tractors are designed for ease of use for both operation and maintenance. The John Deere Easy Change™ System (“Easy Change”) allows the user to easily complete the recommended engine oil and filter maintenance in 30 seconds.

What is this new oil change system?

We changed the oil change. The all-in-one oil and oil filter system gives the owner the ability to change a portion of the oil and the filter in less than 30 seconds.

What happens to the rest of the oil in the engine when the Easy Change system is replaced?

The Easy Change system replaces.8 quart of oil. The remaining oil in the engine is refreshed by the charge of new oil included in the replacement Easy Change system. Combined with 40% more engine oil capacity, improved filtration and cooler running temperatures which help extend oil life, it is no longer necessary to remove and dispose of all the oil in your engine during service.

What makes the Easy Change system unique from other filters?

It is not just a filter. It is a newly developed technology system that allows a new “filter” to come already charged with oil and allows you to remove an existing filter and the contaminants inside without tools and without making a mess. Beyond the filter, technology within the canister and on your engine makes this possible.

Models with the Easy Change oil system use a fully synthetic filter that has more capacity to trap and hold contaminants. The larger surface area of the Easy Change canister acts like a radiator helping the oil to stay cool.

Does the Easy Change system somehow decrease the life of the engine?

The John Deere 100 Series lawn tractor models, with and without Easy Change, are specified for the same lifetime and are rigorously tested to the same standards to ensure the life of the tractor meets expectations.

Can I add the Easy change system to an existing tractor?

Because this system also requires unique features within the engine, the Easy Change system cannot be added to an engine that was not equipped with it at the factory.

Can I change all the oil if I choose to?

You could if you wanted to. There is an oil drain plug. It is not required for maintenance.

How often do I need to change the Easy Change canister?

Every 50 hours or once a year. The 100 Series Lawn Tractors with and without the Easy Change system have the same maintenance schedule.

What type of oil is recommended?

We recommend only John Deere Turf-Gard™ 10W30 Oil. The Easy Change canister comes pre-filled with John Deere Turf-Gard™ 10W30 oil.

How do I recycle the old oil?

Many local government recycling programs, authorized retailers, auto repair stations, and auto parts stores will puncture and recycle used oil filters and oil.

Do I ever need to add oil?

Yes. Consistent with our service recommendations for this product, you should check oil level daily and add oil if required.


The Scag ® 2-Bag Spindle Driven Grass Catcher (GC-2B) for the Scag Patriot™allows you to quickly and conveniently collect grass clippings and leaves, delivering a picture-perfect, groomed lawn on all Scag Patriot mowers.

With a 7-bushel capacity and a 6? discharge tube, this is a serious debris-catching system. Contact your Scag Dealer today to get your hands on this time- and labor-saving tool.


Compact, vertical blower design adds only 6 to the width of the mower. That’s less space than the discharge chute normally takes! The extremely durable, steel blower housing is angled at the bottom and front to prevent it from damaging uneven terrain. The blower fan is constructed of all steel—no light-duty plastic components. The blower fan is 12 1/2 in diameter with fan blades (4 blades total) that are 3 3/4 wide.


The all-steel blower assembly is driven by the cutter deck via a self-adjusting belt idler system, rather than an auxiliary engine. That means a more compact design, less maintenance, less initial cost, quieter operation and less overall weight. Thick, 1/4 fan-blade material ensures dependability and long life. Improved blower bearing features a stronger cast-iron housing and easier greasing for long, reliable service.


The 2-Bag Spindle Driven Grass Catcher hood features a durable, all-metal debris screen and metal construction that resists damage from flying debris.

The extra-large screen (25 1/2 x 15) filters out larger debris particles, keeping them in the bags while letting air escape. This airflow is essential to proper debris flow from the cutter deck into the bags. The screen is flat and is easily scraped clean.


The 2-Bag Spindle Driven Grass Catcher hood features a dual exhaust-port system that directs debris and airflow away from the operator. It also helps prolong engine air-filter life.

The wide (10 1/2 x 2 7/8 each), dual exhaust-outlet ports also maintain proper airflow as the collection bags fill with clippings. This means consistent vacuum performance when the bags are empty and when they are full.


The 2-Bag Spindle Driven Grass Catcher bags are constructed of a commercial-grade fabric for long life. The bags are tapered so when turned upside down, debris exits easily.

The bottoms of the bags are made of hard plastic to resist damage from foreign objects. The upper support frame of the bag is made from steel.

A steel grab handle on the bottom makes emptying the bags easy.