The GuineaDad Liner is well worth the investment. Initially, when our family first decided to bring home guinea pigs I did my research (internet) and was trying to find ways to save some money where I could. I saw all the videos of people making their own liners and saving some $$ in the process. I made a pair of 2x5 (that's the size of the C&C cage I made) liners out of fleece and UHaul moving covers, they worked well as expected and were soft, but they would constantly clog our slop sink after...