I've heard so many great things about it and bought a small bag for the first time today to try it out and see how it works. My 6 girls are 9 weeks old now, and I figured it was time to clean things up a bit, especially since they prefer to sleep on the ground in the dirt still. Anyway, I plan to dust everything down including them, and I would like to put some in their drinking water for any internal parasites, so how much do I use per gallon? ~Thanks Kim~