Poultry protector cleans away parasites naturally. It is for use on the birds, their bedding and surrounding grounds. Studies show that when fleas, mites and lice are not available on or around your birds they become less aggressive and less stressed. This allows them to increase egg production and gain weight. The Poultry Protector 16oz Spray is a ready to use, 16 oz. Great for 12 or fewer birds.