Are flea treatments poisoning your pet’s blood...or are they completely safe?Download my free book: Pet Health EssentialsUsing Garlic as a Flea TreatmentThere is no good evidence to suggest that feeding garlic has any flea repellant activityGarlic, onion and chives (all in the allium family) cuse red blood cell destruction which can result in severe anaemia - head here to read more about onion and garlic poisoning in dogs (LINK TO POSTHow Do Flea Treatments Work?Modern flea and tick preventive treatments work in different ways depending on the active ingredient. They are generally much more targeted towards insect biology rather than mammalian biology.Older drugs, such as organophosphates, were much more dangerous, as well as being less effectiveThere are still potential side-effects with modern flea treatments (something that's true with any drug), and these might make certain products a good choice for some individuals while not suitable for others.Full show notes