I’ve never used DE for fleas but a few times a year I’ll mix a tablespoon in with my dogs’ meals for a few weeks to help prevent intestinal parasites. For fleas I use natural oil based topicals or sprays and Earth Animal’s herbal tincture. Unfortunately though, if you dog is already infested with fleas you may need to use a chemical preventative just to get rid of them. The pills are more effective than the topicals and I know many vets feel they’re safer – if I recall correctly I believe Dr. Becker recommends Comfortis for dogs with flea allergies. Personally, I’d give one dose of Comfortis and treat the household (VERY important to rid the environment as well) and once the fleas are gone start on a chemical free regimen the next month. Natural products can be very effective for preventing flea infestations but not very effective for getting rid of an infestation that’s already occurred.
