Vet's Best Flea and Tick Spot-on Drops Topical Treatment for Dogs, USA Made Vet's Best Flea and Tick Spot-On Formula provides quick killing action and long-lasting control and repelling of fleas and ticks Spot-On uses key, natural ingredients (clove leaf oil, thyme white oil, and cinnamon oil) with absolutely no pyrethrins, permethrins, or cedar oil Includes 3 -8 applications with a universal applicator for both small breed dogs and large breed dogs Easily applies between your dog's shoulder blades for fast relief from fleas and ticks Safe for use on dogs 12 weeks or older (see directions for proper application)