The theory behind DE is that it coats the exoskeleton of the insect, keeping it from breathing. In order for it to work on a dog, you would have to keep the dog COVERED in it--too dirty to be in the house or even to pet.
I don't believe there are any scientific articles to prove or disprove whether feeding it does anything to control internal parisites. However, I don't believe it would work if "coating" the varmit is what is supposed to kill them.
Meredith
I don't believe there are any scientific articles to prove or disprove whether feeding it does anything to control internal parisites. However, I don't believe it would work if "coating" the varmit is what is supposed to kill them.
Meredith
