to use with all animals including birds and small pets. When used daily, Fly Free prohibits blood feeding insects from biting and prevents them from laying eggs, thus breaking the reproductive cycle of the female. She must draw blood every 20 - 24 hours or the female insect will die. This includes all blood feeding insects - fleas, ticks, biting flies, mosquitoes, mites and lice. How does it work??? As Fly Free enters the blood stream, it produces an enzyme that shields the protein needed by the female in order to lay eggs. If she cannot sense this protein, she will not bite the animal but will look for another place to draw blood. This product can be used on all domestic pets, horses, cattle, other farm animals and zoo animals to eliminate biting flies, mosquitoes, fleas, ticks and other bloo...  (less)

to use with all animals including birds and small pets. When used daily, Fly Free prohibits blood feeding insects from biting and prevents them from laying eggs, thus breaking the reproductive cycle of the female. She must draw blood every 20 - 24 hours or the female insect will die. This includes all blood feeding insects - fleas, ticks, biting flies, mosquitoes, mites and lice. How does it work??? As Fly Free enters the blood stream, it produces an enzyme that shields the protein needed by the female in order to lay eggs. If she cannot sense this protein, she will not bite the animal but will look for another place to draw blood. This product can be used on all domestic pets, horses, cattle, other farm animals and zoo animals to eliminate biting flies, mosquitoes, fleas, ticks ...  (less)