I have hamsters at home, and their usual food is chometz. I can feed them with cornflakes and other kitniyot for a short period (about a week, maybe more), but not for a long time. Hamsters store food inside their mouth and can some time spit it out.
The question is: Can I just clean their cage from chometz before Passover, or I must ensure that they had finished all chometz inside their mouth too?
P.S. I'm aware about CYLORing, you don't have to remind me that once more :)