I bought some food grade St. Gabriel DE with the hopes of dusting my cat kennel for flea control. The package says its a pet approved brand safe for indoors and outdoors. However, I have a concern because there is a precautionary statement about it being hazardous to humans and domestic animals. It says "Causes moderate eye irritation. Avoid contact with eyes. Use adequate ventilation and avoid breathing dust. Wear a suitable dust mask when using this product during prolonged exposure". I'm stumped! Does anyone know how to safely use this product? Aren't they going to breath it in when they are out there playing? What if the wind blows it up in their eyes? Would dusting around the outside perimeter of the kennel do the trick?