I started out using DE because I read some good things about it, but I have stopped using it with my chickens. I know I will probably catch holy h-*&$ from all the diehard DE fans but I do not believe it works as claimed. Also, I have been doing additional reading and searching and find that DE is hazardous if inhaled for me and the hens, and subjects us both to respiratory infections, so I have decided the risks far outweigh any benefit that may have been provided. Just my two cents worth. That and two bucks will get you a cup of coffee.