I personally don’t use any chemicals on my dogs. I use Sentry Natural Defense topical which has pepermint oil, lemongrass oil, cinnamon oil and thyme oil and I put Earth Animals No More Ticks herbal tincture in their food 6 days per week during flea/tick season. My dogs are outdoors a lot, I comb them with a flea comb daily during flea/tick season and have never found a flea or tick on them. All their snap tests have always come up negative for lyme as well. Dogs with weak immune systems are more likely to attract parasites (both internal and external) – so the best and safest way to prevent flea infestations – imo – is building up their immune system. When my dog ate low quality kibble I always had flea issues (I used Advantix on him and he had a flea/tick collar purchased from the vet during the summer). Since I’ve switched to a grain-free raw diet, eliminated chemical flea and tick preventatives, eliminated chemical wormers and limited my use of heart worm preventative and vaccines – I’ve never had any of my dogs get fleas, ticks or intestinal parasites.
