My chinchillas don't even eat chin pellets anymore. They get show formula rabbit pellets and so do the degus. I never could get my degus to eat any kind of guinea pig pellets (they'd pick through and eat the chinchilla pellets). The chins decided they didn't like the Mazuri chinchilla pellets anymore so after some research and talking to other breeders, I switched to Purina Advanced Nutrition Show Formula Rabbit pellets. The degus and the chins are all doing very well on them. (They also get hay cubes and a supplement.) It works for me.