[theBCnut]

DE in the food won’t do anything for the fleas, but you could dust the dogs with it, just be careful of getting it in eyes and nose. Usually, dogs get dog or cat fleas, and these live primarily on the dog, so bathing weekly to kill the fleas on the dog until the problem is resolved is one of the best things to do. That and step up vacuuming. Get a flea collar or flea powder and chop it to pieces and vacuum it up so that any fleas that are vaccuumed die instead of finding their way out.