... If one's applied correctly. In the first application's did not work the same because the barn was not cleared properly. Since the second application three years ago, we have peace with the like mites, lice Creatures. Used regularly and properly, you at least get at home in the small barn (to ten chickens) the mites under control. Disadvantage: In the past three years the price of Agrinova is increased by a quarter. For me, the rip-off!