AGRINOVA mites free holding - applied regularly - the henhouse guaranteed free of ectoparasites of any kind are formed no resistance, which in the chemical treatment is often the case.. The powder is (compared to chemical products) very reasonably priced. But I would absolutely buy a matching hand sprayer (z. B. Hand sprayer Gloria) do so because so that the powder can be much, much more economical to use! In addition, the powder is therefore much finer divided into the smallest corners. For 10 years we keep chickens and our barn was since we never use Agrinova mite free as free of ectoparasites. I wish I had discovered the product just earlier! Thoroughly recommended for humans and animals.