The best way is to use a wire brush and then paint the cleaned area with a rust preventive paint. Please do not let your ferret back into the cage until the paint is completely dry. Think of your ferret as if it were a small child and take precautions just as you would for a very bright two year old. Ferrets are very curious and might try to "taste" the paint as well as they might eat the rust flakes, so be careful.
A deodorizer spray or soap for ferrets that smell like fruits include Marshall's Ferret Odor Remover, GoodBye Odor for Ferrets, and the Super Pet Clean Cage Habitat Deodorizer.
No not that i no on any way but if you clean there cage often there shouldn't be that big of a smell, ferrets are like rats they clean them selves at least 5 times a day .
Ferrets are not caged animals, but you cage them for their protection. Most ferret owners cage ferrets when they're not at home or unable to supervise them when free roaming. Ferrets need about 4 hours daily time out of their cage in a ferret proofed environment. Ferrets being burrowing animals by nature are subject to crawl and fall asleep into places that can be dangerous and you cannot get them out, like in major appliances, couches, recliners (very dangerous for ferrets). I personally do not cage my ferrets, but keep them in a bedroom totally ferret proofed so they are safe
You can keep them all in the same cage provided it has plenty of room and they aren't confined too much. A ferrets cage size at minimum should be at least 3 foot width X 2 foot depth X 2 foot height. A large, well designed cage for ferrets is a necessity especially if you plan on keeping more ferrets in the same cage.
you should clean it once a week
You should clean your hamster's cage every couple of days. PetProductsByRoyal.com
Ferrets being very social animals should be allowed out of their cage for at least four hours daily. Ferrets are not caged animals, you cage them for their protection. Prolonged caging can lead to illness, stress related disease and aggressive or abnormal behaviors in ferrets.
For five ferrets, the largest cage you can afford as ferrets need room to move and exercise. Ferrets also need plenty of supervised time out of the cage for their health and welfare See related question and answer below for more information
Depend on where it's going to be kept - A cage is meant to be used indoors, as a hutch is for the outdoors. I would recommend the largest cage you can afford, as ferrets are not caged animals, you cage them for their protection.
Change your ferrets water at least once daily
daily
you should wait 20 day until cleaning the cage