This may sound like a silly question and opposite of other people's complaints about their pigs chewing everything...My girls don't chew anything (except food and hay, of course). I know guinea pigs teeth continually grow and they need things to chew on but my girls don't chew on anything. I've got cardboard box hidey things and wooden chew blocks and anything else I can think of for them to chew on and NOTHING. They have unlimited hay and the recommended amount of pellets and fresh veggies but I'm concerned about their teeth. They all look ok now. Has anybody else had this issue? Any ideas? I am thankful they don't chew on the coroplast and fleece though.