Yup. I was having the same problem. I couldn't find any pans that were straight, they all had slight curves. I went with it anyways and haven't had any problems because of it. They do not have ths space to run and jump like a pet rat might, but they are hard at work breeders and do fine. I don't like my feeders to get too much excercise... I want them to put all those extra colories in to growth and weight. It's my meat farm - I raise them in a manner best suited to feeders, not pets. By no means are they treated ill however, they have not showed any signs that this lifestyle is affecting them negatively... they seem just as happy as the pet rats, only they are socialized to eachother, not myself.
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