Trying to find medicine, or powders that i can put in my feral cats food or water or on the area that they sit on. Once i spay or neuter them there is not catching them again, unless i find one that needs medical treatment, i try to catch them. But in the meantime i am trying to keep them as healthy as i can. I was at the vets one day and the vet mentioned this Diatomaceous earth. And from what little i read about it, it can be put into the food and also on the carpet they sit on. Does anyone know anything about this stuff. I have to do a little more research, but curious if anyone has ever used this stuff for anything.