Avitrol Bird Mite and Lice Spray is an alternative to the product Pestene. For those not wanting to use a powder form of pest control, then Avitrol Bird Mite and Lice Spray is for you. Spray all over the feathers on the birds and the bugs will jump off to find a new host. Great news for those itchy girls! And..for preventative care, dose once a season (every 3 months) or more regularly if you feel it is needed.