I've read all about how to dust for mites, looks pretty simple. I like one poster's suggestion of putting the Sevin in a bag with just the bird's head sticking out and doing a "shake 'n bake" type method- but I'm concerned because a lot of the mites on my boy are right around his comb. He is a Silkie- how do i get rid of those mites that are on his head, without getting the dust in his eyes/nostrils/mouth..etc?