How to Use Litter Liners: A Step-by-Step Guide
By Becopets | Published: 2026-10-14
Category: How-to Guides
Learn how to use litter liners without snags or daily bag changes. Follow seven steps to set up, secure, and maintain a cleaner cat litter box.
Quick Answer
To use a litter liner, choose a liner sized to your box, press it into the corners, fold the excess over the rim, and add 2–3 inches of litter. Scoop daily and replace the liner weekly or when soiled. Liners are not for every cat; some cats scratch through them or avoid the box, so watch your cat's behavior after setup.
Before You Start: Check Your Box and Litter
Measure your litter box before buying liners. Liners are sized by dimensions, and a liner that is too small will pull loose from the rim, while an oversized one bunches in the corners where cats dig. If your box has a rounded or irregular shape, a standard rectangular liner may not fit securely.
Litter type also matters. Fine clumping litter can slip under a loose liner edge, while heavy crystal or pellet litter can weigh the liner down and cause tearing. A liner works best with a box that has a flat rim and a litter depth of about 2–3 inches.
How to Set Up a Litter Box With a Liner
Work on a floor you can wipe clean. Unfold the liner and drape it over the empty box so the edges hang evenly on all sides. Press the liner into the bottom corners with your hands, then smooth the sides against the box walls. Fold the excess over the rim rather than tucking it under the box, so you can lift the liner out later without fighting the weight of the litter.
If your cat digs aggressively, a liner alone may not stay put. A box with a liner-securing rim or a slightly deeper pan helps. For cats that scratch at the liner, consider a box without a liner or a durable alternative, because torn plastic can be swallowed.
Daily and Weekly Litter Liner Tips
Scoop solids and clumps daily. This keeps odor down and prevents clumps from sticking to the liner, which is the main cause of tears. When the litter looks dull or smells even after scooping, it is time for a full change.
For a full change, gather the liner corners together, lift the whole bag out, and tie it closed before disposal. Wipe the empty box with a pet-safe cleaner, let it dry, and install a fresh liner. A second liner under the first can be a quick backup, but it adds bulk and may make the fit looser.
Step-by-Step Litter Liner Setup
- Measure your litter box: Use a tape measure to record the inside length, width, and height of the box. Buy liners that match those dimensions. A liner that is too small will slip off the rim; one that is too large will bunch and tear. Checkpoint: the liner should cover the bottom and drape over the rim with a few inches to spare.
- Empty and clean the box: Remove all old litter and wash the box with warm water and a mild pet-safe soap. Dry it completely. A damp box makes the liner cling and wrinkle, which is uncomfortable for your cat. Checkpoint: the box is dry and odor-free before the liner goes in.
- Fit the liner into the corners: Unfold the liner and press it into the bottom corners first, then smooth it up the sides. Push out air pockets so the plastic sits flat. Do not stretch the liner tight; leave a little slack so it can flex when your cat digs. Common mistake: pulling the liner tight like a drum. A little slack prevents tearing at the corners.
- Fold the excess over the rim: Instead of tucking the liner under the box, fold the overhang over the rim. This keeps the liner in place and gives you a clean edge to grab during changes. If your box has clips or a rim, secure the liner there. Checkpoint: the liner stays put when you gently tug the edge.
- Add 2–3 inches of litter: Pour litter evenly to a depth of about 2–3 inches. Too little litter exposes the liner and encourages scratching; too much makes the liner sag and tear when your cat digs. Level the surface with a scoop. Common mistake: overfilling the box. More litter does not mean less odor; it means more weight on the liner.
- Scoop daily and check for tears: Remove clumps and solids every day. As you scoop, look for holes or tears in the liner. A small tear can let urine leak under the liner, which defeats the purpose and creates odor. Checkpoint: if you see a tear, replace the liner at the next full change.
- Replace the liner weekly or when soiled: Gather the liner corners, lift the bag out, and tie it closed. Wipe the box, let it dry, and install a fresh liner. If your cat urinates outside the clumps or the liner smells even after scooping, change it sooner. Next step: if your cat avoids the box or scratches through liners, try a box without a liner and see if the behavior improves.
Product Facts
- Wild Boar Dry Food with Pumpkin & Broccoli: Wild boar is high in digestible protein and hypoallergenic with a taste that dogs love. This grain-free recipe is filled with freshly prepared boar, vegetables and superfoods. Nothing artificial. All our ingredients are cooked at low temperatures to maximise digestibility to lock in their flavour and nutrients. A highly digestible, grain-free diet can produce firmer stools, which means fewer messy cleanups in the litter box and less litter stuck to the liner.
- Boredom Buster: An enrichment toy to fill with treats, nut butter or paste that’ll keep your dog busy and stimulated. It’s made from springy natural rubber and rolls to keep your dog engaged as they solve the puzzle. This toy is designed to hold its own against determined dogs and heavy chewers. While you are busy cleaning the litter box, this toy keeps a dog occupied and away from the cat's box, reducing the chance of a dog raiding the litter.
