The issue of adverse reactions to vaccination in pets has been a major concern for many pet owners. Vaccines protect many flea and tick products contain permethrin as an active ingredient. Permethrin is a type of toxin, specifically a neurotoxin. It targets and damages the insect’s nervous system and eventually causes death. Permethrin-containing products are relatively safe for use on pet dogs. But the chemical is very toxic to cats so it should never be used on them. Many cases of permethrin poisoning in cats tend to occur in multi-pet households because many pet owners are unaware of the toxic effects on cats and treat their dogs and cats using the same permethrin-containing product.If you have a mixed-pet household, it is highly recommended to seek the advice of your vet Jacksonville, FL about what product to use when treating fleas, ticks, and other parasites. To know more, visit https://vetsjacksonville.com.