I have tried litter liners for the first time this week and I really like that it may keep her litter box cleaner and by that keep down the chances of bacteria growing and such as that but I am wondering if there is a certain brand that is better than another one. I got hers from walmart and after like a week it has little pin holes in it and I was just making sure if that's normal the holes are up at the top and the sides like were I put the hood down at. She didn't seem to bothered by the change and I also got her a new litter pan while I was at it and I simply put some pieces from her old litter box in the new one and I put it where her old litter box was kept and she has seemed to be bothered by the change. Is that how most people change them out when they buy a new one. I haven't bought a new litter box in so long I was actually a bit worried at first.