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I haven't had a chin who was a digger before but I only had chins for a very short while. What kind of cage is Magenta in now? I'm guessing it's solid bottom? My chins were in Hagen cages with solid bottom that were about 2" - 3" high and they didn't really kick that much shavings out. They did manage to throw poop all the way across the living room though, lol!
What kind of new cage are you getting?