i only use cupirnol its pretty cheap and comes in all colours they also do one called ducksback which has added wax in it also this is animal freindly does a great job of turning white chickens green :lol: :lol: :lol: if at the time they ever got stolen i would of known if they were mine .some people do use cresote but that can be very hard to get hold of now but its meant to help against red mite i havent tried it so would not know if it really works as i have read so many different things about it .