I have a cage that is 2x3 feet, 4 feet high. There are no shelves of any sort in this cage; only two side doors - an upper and a lower. Any suggestions on how I might create some floors, ramps, etc.? Currently, food dish and litter pan is on the linoleium floor, and two hammocks hang above the floor. The majority of the cage is entirely unused. My ferrets have fleas. The vet recommended a cat flea powder. Is that very effective? Would appreciate any suggestions on how to get rid of the fleas and ease the ferrets' discomfort. Is a ferret's natural coat rather coarse, or soft? [Posted in FML issue 2387]