In theory, litter box liners may seem like a convenient way to keep the litter box cleaner and make changing the litter a breeze. Unfortunately though, liners can create problems for the cats who use the litter box as well as the humans who try to clean it.
A Less Than Perfect Fit for a Cat
Liners that don’t fit perfectly can end up with folds in them where urine can pool and create quite a smelly situation. If the liner isn’t secured well on all sides of the box, it can fold back into the box as the cat uses her paws to cover her waste.