I tried revolution for a few months, but I can't say that it helped his black heads because i had already freed him of them before treatment. lol. He does have monthly treatments of a solution that has ivermectin in it... so woulnd' that also help in your theory or no? It's an interesting thought.... Wolfy Please visit: http://www.geocities.com/wolfysluv/ for information on ferret deafness: http://www.geocities.com/wolfysluv/deaf.html [Posted in FML issue 3839]