"There is only one thing I dislike as much as smelling a litter box and that is cleaning a litterbox. However, when I discovered these hard, thick, almost cardboard like litter pans (or litter pan liner as I use it), I was thrilled. Since I refuse to sift through litter to find "cat presents," I simply buy this wonderful little invention, put it in the litter pan every Sunday, and then a week later, I simply lift the "wonderbox" out of the litter pan and toss the whole thing away in a paper bag with the soiled litter still in it. No fuss, no ripped or shedded plastic liners where the litter drops out of the holes - just grab and toss. That is my kind of litter liner. Plus it seems to help control any urine smell, possibly due to the absorption quality the cardboard like paper seems to have. Needless to say, this product has found a lifetime customer in this cat liking - litter box hating owner."