Ear mite, flea, and tick treatments. Avoid anything with the insecticide "pyrethrins" or "pyrethroids" in it. Here's a news story that was done on this:
Ferrets: Contessa Kitties: Watson, Oskar DIP Sinnead, Vincent, Boris, Zeus and Athena, Willow, Mr. Frodo, Indie, Lucrezia, Judge, Odin, Miss Emily, Suki, Cody, Aristotle, Butterscotch, Frankenfurter. RIP Herne, Ligeia, and Mr. Stubbs
