Dyna-Mite Spray is a natural bird safe formula for repelling mite and lice off birds and their environment. Dyna-Mite is formulated with diatomaceous earth, a natural organic insect killer. It kills mites and lice by physical action and not by chemicals so there is no harm to pets or humans. The tiny hard and sharp diatoms scratch off the insects waxy coating, causing it to dehydrate. Dyna-Mite is effective against mites and lice while the formula soothes and coats your bird's feathers and skin with natural oils.