Yes, we could control it with the diam. earth, but rather not, their skin gets so dry, I only use it in my yard and coop, spread it all over your yard, on a nonwindy day and it will kill anything and everything, inlcuding fleas, it basically dries them out. I even put it in the feed for the chickens, helps with worms. Although unknown to most, we all consume diam. earth as humans, in pancake mixes, some flour mixes and things like that..keeps critters from invadiing while in storage..
I actually use Comfortis on the dogs, the only thing that seesm to work the best.