Best Litter Box Liners for Easier, Cleaner Cat Care

⚡ Quick Verdict

📋 Our Method

We compared manufacturer specs and listed dimensions, then weighed them against customer feedback and rating patterns on Amazon. We didn’t lab-test tear strength. Here’s what each product was scored on:

• Thickness: 2 mil or more earns the top marks.
• Fit: stated dimensions against common pan sizes.
• Closure: drawstring quality and how complaints about it show up in reviews.
• Value: cost per bag, pack size, and who it suits.
• Trade-offs: scent, storage space, and compatibility.

Count	15
Thickness	2 Mil
Dimensions	3ft x 18in
Scent	Unscented

What We Found

At 2 mil, these jumbo bags are thick enough to shrug off the pawing that shreds thinner film. The drawstring is the point of the product: pull it, and the whole bag cinches shut around the clumps, so your hands never touch the waste. They’re unscented, and they fit most standard rectangular and oval pans without much fuss.

Jonny Cat is a long-running name in cat litter, which is partly why the fit and quality feel predictable. Fifteen bags is only about two weeks of full litter changes in a busy home, though, so the math gets worse with more cats.

Who It’s For

Owners of one or two cats with a standard open pan. The jumbo size is deep enough that the bag stays put at the rim better than smaller liners do. And since it’s unscented, it suits anyone who’d rather leave fragrance out of the box altogether.

Count	40
Thickness	2 Mil
Capacity	40lbs
Dimensions	36in x 16in

What We Found

Forty bags in one box is the headline. Each is 36 by 16 inches, 2 mil thick, and rated for loads up to 40 lbs, which is more than a week of litter for most pans. The bags come pre-separated, so you’re not wrestling a perforated roll that tears at an angle halfway through.

That bulk count drops the cost per bag, and it’s the main reason it ranks second. The trade-off is brand recognition: KropBom is far less established than Jonny Cat or Fresh Step, so check recent reviews before you buy.

Who It’s For

Multi-cat households and anyone who changes litter often. It also suits budget shoppers who want a long supply and have a closet to store it in. It fits most medium and large pans, including high-sided ones, but a very wide box may leave you short on overhang.

Count	34
Dimensions	36in x 19in
Thickness	2 Mil
Feature	Eco Friendly

What We Found

PETOCAT’s bags measure 36 by 19 inches, and the listing says they fit boxes up to 18 by 23 inches. That’s the reason to buy them. Most liners top out around the size of a standard pan, so owners of jumbo boxes end up with bags that slide in or leave corners bare.

The film is listed as scratch-resistant, tear-resistant and waterproof against urine, and each of the 34 bags comes separate so seams don’t tear on the way out of the box. Sturdy drawstring handles make the lift easier. The listing also calls the product eco friendly, but it doesn’t say what that means in practice, so treat that as a minor point.

Who It’s For

Owners of oversized or custom litter boxes, and households with large cats that need a deeper pan. It also suits anyone who’s been burned by seam tears in cheaper liners.

Count	15
Size	Super
Material	Recycled Plastic
Origin	USA

What We Found

This is the largest liner Jonny Cat makes. It’s built from recycled plastic and uses the same drawstring design as the jumbo: lift, tie, toss. The listing doesn’t give exact dimensions or film thickness, so measure your pan against the product page before ordering.

The liner covers the pan surface, which means no scrubbing between changes. It’s also made in the USA, a detail some buyers care about more than the recycled content.

Who It’s For

Owners of growing cats who’ve moved to a bigger box, and anyone who already trusts the Jonny Cat brand and wants its biggest size. Buyers who prefer recycled plastic and US-made goods will like it too.

Count	7
Dimensions	2.5ft x 17in
Scent	Scented
Feature	Drawstring Secure Close

What We Found

Fresh Step adds a light fragrance to the liner itself, aimed at taking the edge off box odor between full changes. At 2.5 ft by 17 in, it’s the smallest bag in this list, so it suits large oval and rectangular pans less well than the jumbo options. The film is described as heavy-duty plastic that resists rips from digging.

Side drawstrings gather the edges to keep litter in during the walk to the trash. The scent works best paired with clumping litter in a small space, where odor builds fastest. The listing doesn’t state film thickness.

Who It’s For

Apartment dwellers with limited ventilation, and anyone who’s sensitive to litter odor themselves. Choose it only if your cat has shown no trouble with fragranced products, and only if your pan is mid-sized.

Count	5
Thickness	2 Mil
Dimensions	3ft x 18in
Scent	Unscented

What We Found

It’s the same bag as the Editor’s Pick, sold in a box of five. You get the same 2-mil film, the same 3 ft by 18 in size, and the same drawstring. The only change is quantity, and cost per bag goes up with it.

Five bags is enough to learn whether the size fits your pan and whether your cat tolerates a liner at all. That second question matters more than most buyers expect.

Who It’s For

First-time liner buyers who aren’t sure about fit, small homes with little storage, and people who want a spare box for travel or a weekend with a pet sitter.

What to Look For Before Buying Litter Box Liners?

Four specs decide whether a liner works: size, thickness, closure, and pack size. Get the first one wrong and nothing else matters.

1. Measure Your Litter Box

Grab a tape measure and take the inside length, inside width, and depth of your pan. Then compare those numbers to the liner’s stated dimensions and any fit note on the listing. PETOCAT, for example, says its bags fit boxes up to 18 by 23 inches.

The liner needs enough extra film to cover the floor, climb the walls, and fold over the rim. Too small and it slips into the litter. Too big and it bunches, which cats like to dig at. If you’re between sizes, go slightly larger and secure the overhang. Our guide on how to choose an open litter box also covers how to size the pan itself.

2. Check the Thickness (Mil)

A mil is one thousandth of an inch, so a 2-mil liner is 0.002 inches thick. Look for 2 mil or more. Thinner bags tend to rip when you lift a wet, heavy clump, and by then it’s too late.

3. Pick the Right Closure

A drawstring lets you lift and seal the bag without touching the contents. Pre-separated bags beat rolls, because a roll that tears unevenly can leave you with a ragged bag at the worst moment. Check the listing for either drawstring or a similar secure close.

4. Compare Pack Size and Cost per Bag

Divide the total price by the count. Bulk packs of 34 or 40 usually win on cost per bag, but they need shelf space and a bet that the size fits. If you’re unsure, start with a 5-count box. Then buy bulk.

Litter Box Liner Buying Checklist

• I measured my pan’s length, width, and depth.
• The liner is 2 mil or thicker (or the thickness is stated).
• It has a drawstring or similar secure closure.
• The size matches my pan with room to fold over the rim.
• I decided on scented or unscented based on my cat, not my nose.
• I did the cost-per-bag math.
• My automatic litter box, if I have one, allows liners.

Do You Actually Need Litter Box Liners?

Not always. Liners save scrubbing, but they cost money every month and some cats hate them. Here’s how the trade looks.

Liners pay off if you have a heavy-use box, a pan that’s hard to lift, or a tendency to skip full cleanings because they’re a pain. They’re a poor fit for cats that dig hard or avoid anything new. Try a 5-count box first.

If liners don’t work for your cat, a few alternatives help: a high-sided pan to cut scatter, a scoop-and-wash routine on a set schedule, or a litter mat to catch tracked granules (a mat won’t stop leaks, though).

Scented vs Unscented Litter Box Liners

Cats smell far better than we do, so a fragrance that’s faint to you can be strong to them. If your cat starts avoiding the box after a switch, the scent is a suspect.

A cat with asthma or other breathing trouble is a question for your vet, not a product page. Go unscented in the meantime. For odor, daily scooping does more than any fragrance. For more, read do open litter boxes smell? and see our best open litter box for odor control picks.

How to Use a Litter Box Liner? Step by Step

Installing a New Liner

1. Empty the old litter and wash the pan with mild, unscented dish soap. Dry it fully.
2. Open the liner and spread it over the pan, pressing it into the corners.
3. Smooth out the wrinkles on the floor of the pan. Wrinkles trap urine and give claws something to catch.
4. Fold the overhang over the rim. If it keeps slipping, use binder clips or the pan’s own lip to hold it.
5. Pour in the litter slowly so the liner doesn’t shift.

Removing and Disposing of It

1. Unclip the overhang if you used clips.
2. Pull the drawstring until the bag gathers closed, then tie it.
3. Lift from the knot and the base, not by the middle, so nothing sags or splits.
4. Bag it in the trash. Don’t flush litter or waste.
5. Wash your hands. If you’re pregnant, ask your doctor about handling litter at all, and wear gloves if you do.

Tip: Scoop daily, even with a liner. The liner handles the full change. It doesn’t replace the scoop, and a good litter scoop keeps the daily job quick.

Common Litter Box Liner Problems and Fixes

Frequently Asked Questions

How often should I change litter box liners?

Change the liner each time you replace the litter. For one cat that’s often about once a week, and more often with several cats or a litter that clumps poorly. Check for small tears every day, since a leak under the liner is the thing you’re trying to avoid.

Don’t reuse an emptied liner. Residue stays behind and the film doesn’t survive a second round.

Do litter box liners really work?

Yes, if they fit and they’re thick enough. A good liner keeps urine and clumps off the pan so cleanup is a lift-and-tie job. A poor one tears or bunches and makes the job harder. Size and a 2-mil thickness decide most outcomes.

What size litter box liner do I need?

Measure the inside length, width, and depth of your pan, then pick a liner with enough film to cover the floor and fold over the rim. Standard open pans usually work with jumbo bags around 3 ft by 18 in. Oversized pans need something bigger, like the PETOCAT bags that list a fit up to 18 by 23 inches.

Do scented liners harm cats with sensitive noses?

Some cats object to fragrance, and a cat that dislikes the smell may stop using the box. Watch for avoidance, sneezing, or going elsewhere in the house after you switch. If that happens, return to unscented.

For a cat with a respiratory condition, ask your vet before using fragranced products.

Can I use regular trash bags as litter box liners?

You can, and in a pinch it works once. But most trash bags are thinner, the wrong shape, and have no drawstring built for a wet, heavy load. They tear under clumps and don’t hold the rim. A dedicated liner is built for the weight and the fit.

What if my cat keeps tearing the liner?

Step up to a 2-mil liner and make sure the fit is snug, since loose film is easier to catch. Trimming claws helps. If the cat still shreds it, drop the liner and use a scoop-and-wash routine instead.

If a liner tears mid-use, empty the pan, wash it with mild soap and water, and install a fresh one so urine doesn’t soak into the plastic.

Do litter box liners work in automatic or self-cleaning litter boxes?

Usually not. Liners can interfere with moving parts or sensors. Check your litter box manual before you try one. None of the liners in this guide are designed for automatic boxes. Weighing a self-cleaning box? Read our open vs automatic litter box comparison.

How do I keep a litter box liner from slipping?

Use a size that covers the pan with a generous fold-over, smooth the floor flat, and clip the overhang to the rim with binder clips. Pour the litter slowly so it doesn’t drag the film down.

Are there biodegradable litter box liners?

Yes, some brands sell liners labeled biodegradable or made with recycled plastic. Look for a certification on the packaging instead of relying on the word “eco.” Even certified bags may break down slowly in a landfill, and they can cost more.

Check local waste rules before choosing. Don’t flush litter or waste, whatever the bag claims.

How much do litter box liners cost per bag?

Divide the pack price by the bag count. Bulk packs like the 40-count KropBom usually land lowest per bag, and 5-count trial boxes land highest. Prices change, so check the current Amazon listing.

Related Open Litter Box Guides

• Best Litter Scoop: faster, cleaner daily scooping
• Best Litter Mat for Open Litter Boxes: catch tracked litter and spray
• Best Open Litter Box for Odor Control: keep the smell down
• Do Open Litter Boxes Smell?: what causes odor and how to stop it
• Best Open Litter Box for Multiple Cats: setups for shared homes
• Best Budget Open Litter Box: low-cost options that work

🎯 Final Verdict

Get the Jonny Cat Jumbo liners if you have one or two cats and a standard pan. The 2-mil film and drawstring cover the basics with no drama, and the 15-count box is easy to store. Its weak spot is cost per bag once you scoop for more than two cats.

Then, if you live with a crowd of cats, buy the KropBom 40-pack instead. For jumbo boxes, go PETOCAT. If you’re unsure whether your cat will tolerate a liner at all, spend a few dollars on the 5-count Jonny Cat box and find out before stocking up.

Want to compare every box style before you buy? Browse our complete open litter box guide, or go back to the indoor cat litter box guide to see all litter box types.