My sons and I are getting our birds ready for fair in 2 days, so we are bathing them. During the bathing process we discovered that my one son's silkie roo has lice! We bathed him in a dog flee and tick shampoo. Will this work for the lice, or should I still dust him with sevin? I don't have any on hand, but I could run to the store. Also, even if I dust him with sevin tonight, will I be able to bring him to the fair in 2 days? How long does it take to kill them? Also, I have only found them on the one roo, but should I assume that all the chickens probably have them? (He is kept in a cage since he is a show bird, and does not room with the others, but his cage is in the same coop as everyone else) Anu help would be really appreciated! Thanks so much!!