Personally, unless my ferret is covered in poo, the answer is a resounding NO! A ferret’s coat has natural oils in it. By shampooing your ferret, be it with ferret shampoo or even baby shampoo, you are taking out the natural oils from the coat. The ferret then has to work overtime to replace these oils which can then cause the ferret to smell, at which point the owner then baths them again to get rid of the smell. A bit of a vicious and unnecessary circle!
The best and most natural way to freshen up a ferret’s coat is by allowing them to play in the bath or shower with warm clean water. Treat it as a game then everyone has fun, the coat has been refreshed and the bathroom floor and you are both soaking wet, which your ferret will love! Don’t overdo it though, just occasionally. Also to help keep your ferret’s coat gleaming, make sure they have clean bedding and remember to give them a good brush, with a clean brush, every week or so.