I sprinkle it on the hen house floor, then put clean pine shavings on top of that. I have never had 'poo' stick to the floor, and it keeps everything dry. I rake gently to avoid too much dust in the air. My chickens preen a lot, but do not scratch at all...I don't think any of them have a mite on them. I also add about 1/2 tsp. to about 10 lbs. of feed. Has not harmed them and seems to keep them parasite free inside and out.