7 Best Waste Bags for the Litter-Robot (October 2026)
The best Litter-Robot waste bags include the ANWA 40-Count Waste Bags for first-time replacement buyers, the ANWA 120-Count Waste Bags for repeat ANWA buyers, and the 45-Count Waste Bags for scent-free drawstring routines.
On this page (7 sections)
- Which litter robot bags fit your routine?
- The best Litter-Robot bags, by use
- How do you choose the right bag for your drawer?
- How should you install and remove a waste drawer liner?
- How often should you replace bags and clean the drawer?
- Which bag mistakes cause avoidable cleanup?
- Which litter robot bags should you choose?
The best litter robot bags for a first replacement pack are the ANWA 40-Count Waste Bags: you get drawstrings without buying a bulk supply before checking fit. Once the liner works in your drawer, the larger ANWA pack makes repeat ordering simpler.
Choose transparent liners if seeing the contents matters, and pre-separated bags if you want to skip tearing along a roll. These are separate choices, so decide which part of a bag change you want to make easier.
For the machine itself, read our Litter-Robot 4 review. If you already have one, our step-by-step Litter-Robot cleaning guide covers drawer care.
Our picks at a glance
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Which litter robot bags fit your routine?
Choose a smaller pack for an unfamiliar fit, a drawstring for easy gathering, or pre-separated liners for quicker dispensing. Buy in bulk once you know the bag stays in place and leaves the drawer clear of loose plastic.
We compared dimensions, closure, dispensing format and named model compatibility. The first pick suits the broadest starting point, while the other options address more specific routines.
| Product | Best for | Count | Size | Closure | Our score |
|---|---|---|---|---|---|
| ANWA 40-Count Waste Bags | first-time replacement buyers | 40 bags | 25.2 x 15.4 in | Drawstring | 8.0 |
| ANWA 120-Count Waste Bags | repeat ANWA buyers | 120 bags | 25.2 x 15.4 in | Drawstring | 7.7 |
| 45-Count Waste Bags | scent-free drawstring routines | 45 liners | 25.2 x 15.4 or 26 x 15 in | Drawstring | 7.3 |
| 120-Pack Waste Bags | quick drawstring changes | 120 bags | 25.2 x 15.7 in | Drawstring | 7.1 |
| 90-Pack Waste Bags | regular transparent refills | 90 bags | 23.6 x 25.2 in | Check preferred closing method | 7.0 |
| 50-Pack Waste Bags | trying clear liners | 50 bags | 23.6 x 23.6 in | Check preferred closing method | 6.9 |
| 180-Pack Waste Bags | frequent bag changes | 180 bags | 25 x 23 in | Non-drawstring | 6.8 |
Bag count affects your supply, not your machine's capacity. A larger pack won't let you leave waste in the drawer longer, and a larger bag won't increase the drawer's usable space.
The best Litter-Robot bags, by use
ANWA's smaller pack is the clearest starting choice, but a lower-ranked option may match your disposal routine better. Use the write-ups below to separate useful handling features from quantity you don't need yet.
ANWA 40-Count Waste Bags
- 40 bags in 2 rolls
- Drawstring closure
- Easy-to-tear design
- ANWA names LR Series Models 3, 4, 5, 5 Pro and EVO
Start here when you want drawstrings without committing to a bulk pack. Check ANWA's pan measurement rule before ordering.
Pros
- Smaller initial quantity
- Drawstrings gather the opening
- Broad named model compatibility
Cons
- Requires tearing bags apart
- Pan length plus width must be under 25 in
Choose this ANWA pack when you're switching replacement brands or haven't settled on a liner. Its 40 bags in 2 rolls limit the amount you commit to while giving you drawstrings for gathering the opening.
The bags measure 25.2 x 15.4 in, and ANWA requires the pan's length plus width to be under 25 in. ANWA names LR Series Models 3, 4, 5, 5 Pro and EVO as compatible.
That broader model coverage makes this a useful starting option for buyers whose machine isn't among the Models 3, 4 and 5 named by most other picks. Check the exact model and measurement rule together.
ANWA describes the material as extra thick and heavy-duty, with an easy-to-tear format. Separate a fresh bag before handling the used one so you aren't working with a full drawer open.
Skip this pack if you've already confirmed the fit and want a larger reserve. Also choose another option if avoiding perforations is a priority.
ANWA 120-Count Waste Bags
- 120 bags in 6 rolls
- Drawstring closure
- Easy-to-tear design
- Same bag dimensions as ANWA's smaller pack
Choose this larger supply after confirming ANWA's liner fits your drawer. The extra quantity reduces how often you need to reorder.
Pros
- Six rolls to divide between storage spots
- Drawstring closure
- Same dimensions as the smaller ANWA option
Cons
- More bags to store
- Poor first choice when fit is uncertain
Choose the larger ANWA pack when the smaller version already fits your drawer and your only remaining problem is remembering to reorder. You get 120 bags across 6 rolls, making it easy to keep one roll near the machine.
The bag dimensions, drawstring closure and named model coverage match the smaller ANWA option. Quantity is the reason to move up, rather than a different fit or a different way to close the bag.
This is a practical choice for a settled cleaning routine, including homes that replace liners before the drawer fills. Keep the spare rolls in a dry storage spot away from pets and children.
Before reordering, check that you're choosing the same bag size and format. Similar packaging or a familiar brand name shouldn't replace checking the details.
Skip this pack while fit remains uncertain, or if you prefer pre-separated bags. Buying more of an awkward liner leaves you repeating the same nuisance at every change.
45-Count Waste Bags
- 45 liners and 1 cat toy
- Drawstring handles
- Unscented LDPE
- KropBom names Models 3, 4 and 5
An unscented drawstring choice for buyers who want a modest supply. Resolve KropBom's conflicting dimensions before ordering for a tight-fitting drawer.
Pros
- Unscented material
- Drawstring handles
- Modest pack size
Cons
- Conflicting bag dimensions
- Not specified as pre-separated
KropBom's smaller pack suits buyers who want unscented material and drawstring handles without a large supply. The LDPE bags come with 45 liners and 1 cat toy, although the liner fit should drive the decision.
KropBom names Models 3, 4 and 5, but gives conflicting bag measurements: 25.2 x 15.4 in and 26 x 15 in. Confirm the exact dimensions with the seller before ordering, especially if your current liner barely reaches around the rim.
The drawstrings suit a routine where you want to gather the opening before carrying waste to the trash. Keep enough slack above the rim to reach the handles without pulling against a heavily loaded bag.
Choose this option after resolving that size difference if fragrance-free bags and a modest count are your priorities. Skip it when you need an immediate, clearly sized replacement or want a stated pre-separated format.
120-Pack Waste Bags
- 120 bags in 6 rolls
- Pre-separated pull-out design
- White translucent LDPE
- AWoHH names Models 3, 4 and 5
Pre-separated bags and drawstrings simplify two parts of a liner change. Choose this bulk pack when you want both features and have checked drawer fit.
Pros
- No tearing bags apart
- Drawstring closure
- Double-sealed side seams
Cons
- Large initial quantity
- Pan length plus width must be under 25.2 in
AWoHH's larger drawstring pack is the strongest match here if you want both pre-separation and pull-to-close handling. A fresh liner pulls out without tearing, and the drawstring gathers it at disposal.
The pack contains 120 white translucent LDPE bags measuring 25.2 x 15.7 in. AWoHH names Models 3, 4 and 5 and requires the pan's length plus width to be under 25.2 in.
Double-sealed side seams are another construction detail, but they don't remove the need to support a full bag during lifting. Keep it low over the drawer until you know it is intact.
Choose this option when separating bags is an annoying part of your routine and you still want drawstrings. It also suits buyers who prefer white translucent material to fully clear plastic.
Skip it if you only need a small supply to confirm fit. Buyers who want a clear view through the liner should choose one of the transparent options below.
90-Pack Waste Bags
- 90 bags
- Transparent and unscented
- Pre-separated
- AWoHH names Models 3, 4 and 5
A middle option between the smaller transparent pack and the largest bulk supply. Choose it for clear material and tear-free dispensing.
Pros
- Contents visible through the liner
- No tearing apart needed
- Lower count than the largest transparent pack
Cons
- Drawstring closure not specified
- More bags than needed for an initial fit check
Choose AWoHH's transparent pack when you want clear material in a regular refill quantity. Its 90 pre-separated bags sit between the smaller transparent option and the largest supply in this guide.
The bags measure 23.6 x 25.2 in, and AWoHH names Models 3, 4 and 5. Their proportions differ from its white translucent drawstring option, so switching between the two requires a fresh fit check.
Transparent material lets you see the contents through the liner when removing it. That can make visible moisture or residue easier to notice, but it doesn't replace cleaning the drawer.
AWoHH promotes transparency for sensor compatibility. Still, a clear bag needs the same careful fitting as any other liner, with folds and loose edges kept out of the way.
Choose this pack after confirming you like the clear, pre-separated format. Skip it if drawstrings are essential, since that closure isn't specified for this option.
50-Pack Waste Bags
- 50 bags
- Transparent and unscented
- Pre-separated rolls
- AMOGOGOPET names Models 3, 4 and 5
Start with this pack if you want transparent, pre-separated liners in a smaller quantity. Check its square dimensions against your drawer setup.
Pros
- Smaller transparent pack
- No added scent
- Pre-separated bags
Cons
- Drawstring closure not specified
- Requires more frequent restocking than bulk packs
AMOGOGOPET's pack is the better starting point for buyers who want transparent liners in a smaller quantity. The 50 unscented, pre-separated bags let you try that format without taking home a large reserve.
Each bag measures 23.6 x 23.6 in, with compatibility named for Models 3, 4 and 5. The square shape means you'll need to check how the excess material gathers around your particular drawer.
Pre-separation removes the perforation step when you're preparing a fresh liner. Put the next bag within reach before taking out the used one, especially if your trash container is in another room.
Choose this option if clear material and tear-free dispensing matter more than buying the highest count. It is also a sensible switch from opaque liners when you want to confirm the fit first.
Skip it if you require a specified drawstring closure. For an established routine with frequent changes, a larger compatible pack may reduce restocking.
180-Pack Waste Bags
- 180 bags
- Transparent and unscented
- Pre-separated
- KropBom names Models 3, 4 and 5
The largest supply here suits a routine with frequent liner changes and confirmed drawer fit. Leave room to gather and close these non-drawstring bags.
Pros
- Highest bag count here
- Transparent and unscented
- No tearing bags apart
Cons
- No drawstring
- Largest commitment before confirming fit
KropBom's largest pack suits homes that change liners frequently and already know this bag shape works. Its 180 transparent, unscented bags offer the longest supply here when compared at the same replacement rate.
The pre-separated liners measure 25 x 23 in, and KropBom names Models 3, 4 and 5. They are non-drawstring, so leave enough clean material above the waste to gather and close the opening.
Plan that closing step before the drawer is full. A separate tie or a knot may suit your disposal routine, provided the bag has enough slack and remains contained during carrying.
Choose this pack for a confirmed fit and a routine where quantity matters more than pull-to-close convenience. Store most of the supply away from the machine and keep only what you need nearby.
Skip it if you dislike handling loose bag tops or are still comparing sizes. The largest pack creates the biggest leftover supply if the fit is wrong.
How do you choose the right bag for your drawer?
Choose by model, usable fit and handling preference, in that order. Gallon capacity and large pack counts are secondary because neither tells you how a liner will sit inside your drawer.
Measure the drawer for Litter-Robot bags
Measure the waste drawer or pan described in the bag brand's fit instructions, rather than the machine's outer shell. Where a brand gives a length-plus-width rule, add those measurements and compare the total with its stated limit.
Bag dimensions are flat measurements, so they don't describe the fitted shape on their own. The liner also needs material to reach the bottom, cover the sides and fold over the rim or fit into retainers.
A bag stretched tight across the bottom can pull inward as waste falls. Too much loose material can bunch up, making neat installation harder.
Separate closure from dispensing format
Choose drawstrings for gathering the opening and pre-separation for preparing a fresh bag. One feature helps with disposal; the other removes the need to tear a bag from its neighbor.
If grip or dexterity makes small tasks awkward, the combination may be worth prioritizing. Even with a drawstring, lift from a supported position rather than swinging a full bag by its handles.
For non-drawstring liners, plan how you'll close the top before filling them. Don't use all the spare material to wrap the rim so tightly that nothing remains for disposal.
Treat transparency as a preference within your model's rules
Follow your machine's liner guidance first, then choose the visibility you prefer. Clear plastic makes contents visible, while white translucent material gives a less direct view.
Bag color alone won't solve an installation problem. A fold in the wrong place still needs smoothing, and a dirty drawer still needs care.
Match pack size to your actual replacement rate
Estimate your supply using bag count divided by changes per week. At 2 changes per week, 40 bags cover 20 weeks; at 4 changes per week, that same pack covers 10 weeks.
Use your own routine rather than a promised number of months. Multiple cats, early odor-related changes and damaged liners can all increase use.
Keep a spare roll before the last one runs out. Once fit is settled, reorder the same dimensions and format rather than assuming every pack under a brand name is identical.
How should you install and remove a waste drawer liner?
Fit the bag flat against the drawer with secured edges, then check that loose plastic won't interfere when the drawer goes back in. Follow your exact machine's instructions wherever its setup differs from a general routine.
- Prepare a fresh liner and place a trash container nearby.
- Remove the drawer as your machine directs, keeping it level.
- Gather the used liner while it is still supported inside the drawer.
- Lift gently and check for damage before carrying it away.
- Inspect the empty drawer for stuck litter, residue or moisture.
- Clean as needed, let the drawer dry and fit the fresh liner.
- Smooth the bottom and sides, secure the rim and reinstall the drawer.
Several brands here describe folding edges over a Model 4 drawer rim and securing rolled edges in a Model 3 drawer's tabs. Use those directions only for the matching machine, rather than carrying one model's setup across to another.
Don't stretch a bag to force a fit. If the liner pulls away from the bottom or won't stay secured, stop and check its orientation, dimensions and installation instructions.
After fitting, check the drawer status before walking away. If the machine has a liner replacement or reset step, complete it as directed.
A full-drawer alert immediately after a change calls for an installation check first. AWoHH suggests sensor calibration for its compatible bags, but use your machine's procedure and our guide to what to check when a Litter-Robot isn't cycling for further steps.
How often should you replace bags and clean the drawer?
Replace the liner when the machine signals a full drawer or sooner when needed, rather than waiting for the bag's advertised capacity. A torn liner, visible seepage or strong odor is a reason to empty and inspect it.
During the first week with a new bag format, check the drawer regularly. You'll learn whether the liner stays secured and how quickly your household fills it without relying on a fixed schedule.
More cats can mean more frequent changes, but each home's routine differs. Our guide to whether 2 cats can share a litter box covers the wider setup beyond waste bag supply.
Remove residue before covering it with a fresh liner
A clean bag over a dirty drawer leaves the source of odor in place. Inspect corners and the underside of the rim, then clean and dry the drawer according to the machine's care instructions.
Don't add cleaners or fragrances to the liner to cover a smell. Handle odor through waste removal and proper cleaning, with any approved accessories used as directed.
Litter choice also affects what reaches the drawer and how neatly clumps hold together. Our guide to the best litter for automatic litter boxes helps with that separate buying decision.
Close and carry waste with support
Keep the full bag over the drawer while gathering its opening, then support the bottom if the load is heavy. Drawstrings help close a bag, but they aren't a reason to lift it sharply.
Dispose of the sealed waste according to local household waste rules and wash your hands afterward. Keep unused liners and discarded plastic out of reach of cats and children.
Which bag mistakes cause avoidable cleanup?
The most avoidable mistakes are forcing the fit, trapping loose plastic and waiting too long to empty waste. Correct those habits before buying a thicker bag or a larger pack.
- Buying by gallon capacity alone: the drawer's size and fill system still control how much waste it holds.
- Pulling the liner tight across the bottom: leave it seated inside the drawer so falling waste doesn't drag the edges inward.
- Leaving the rim bunched up: secure excess material using the method intended for your machine.
- Assuming clear bags prevent alerts: check placement and sensor care when a fresh liner reads full.
- Using load claims as a target: empty according to the machine's instructions rather than a bag's weight limit.
- Choosing bulk before fit: confirm the size with a smaller supply when practical.
- Ignoring a damp drawer: inspect and clean it before installing another liner.
A liner that repeatedly slips or bunches may be the wrong shape for your setup. Change the fit or bag choice instead of adding improvised fasteners that could interfere with the machine.
Which litter robot bags should you choose?
Choose ANWA 40-Count Waste Bags for your first replacement pack, then move to ANWA's larger supply once the fit works. Pick KropBom's smaller drawstring option when unscented material matters and its dimensions have been resolved.
Choose AWoHH's white translucent pack if you want both pre-separation and drawstrings. For transparent liners, start with AMOGOGOPET's smaller pack, choose AWoHH for regular refills, or select KropBom's largest supply for frequent changes without drawstrings.
Before ordering litter robot bags, settle 3 things: whether the liner fits, how you'll close it and how often you'll replace it. Those decisions are more useful than choosing the biggest pack.
If you're still deciding whether the machine suits your home, read Is the Litter-Robot worth it?. For more help with models, care and parts, browse the Litter-Robot guide.
Our top 3 picks at a glance
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Frequently asked questions
Can you use any bags in a Litter-Robot?
Use a replacement bag only when its dimensions, material and installation match your model's instructions. A bag that stretches over the rim can still leave folds in the wrong place or too little room for waste.
Check drawer fit before stocking up, and keep loose plastic away from moving parts.
Do Litter-Robot bags need to be clear?
Follow your model's liner instructions rather than choosing by color alone. Transparent bags let you see the contents, while some compatible replacements use white or translucent material.
Correct installation still matters: smooth the liner, secure its edges and keep excess plastic out of the drawer's sensing area.
How often should you change the Litter-Robot waste bag?
Change the liner when your machine indicates the drawer is full, or sooner if it leaks, becomes damaged or needs emptying for odor control. Cat count and waste volume affect the interval.
For routine drawer care between changes, follow our Litter-Robot cleaning guide.
How do you choose the right Litter-Robot bag size?
Start with your exact machine model, then compare liner dimensions and the brand's fit conditions with your drawer. Allow enough material to reach the bottom and secure around the rim without stretching.
Gallon capacity describes the bag, so it doesn't tell you how much waste your machine can hold.
Will a new bag stop waste drawer odor?
A fresh liner removes the collected waste, but odor can remain on the drawer or nearby surfaces. Check for residue, clean as directed and let the drawer dry before fitting another bag.
Our Litter-Robot Odor Trap guide explains how that accessory fits into odor control.
