I have a flea and tick mousse that is for cats & dogs. I was wondering if i could use it for my ferrets. The active ingredients are Pyrethrins and Piperonyl Butoxide, Technical. Also, I just found out that one of my ferrets has a blackhead on its tail. I remember some discussion about blackheads from a couple weeks ago, but I heard what to do. Any help would be appreciated. Thanks Ed, Speedy, Spunky, Iggy [Posted in FML issue 1294]