6Apple Cider Vinegar
Apple cider vinegar would make the blood of your pets more acidic. This makes their bodies less appealing to fleas and ticks. All you need to do is to add a few tablespoons to the water or food of your dogs. It is also possible to spray the solution as a safe alternative to pesticides. Keep in mind that the effects are not seen immediately as using shampoos or commercial sprays. However, apple cider vinegar is safe and does not cause any harmful effects. [6]
