Frontline Top Spot is a monthly topical flea and tick medication. It's effective against chewing lice and all life stages of ticks, including the brown dog tick, the American dog tick, the lone star tick and the deer tick (the major carrier of Lyme disease). Purchase Frontline Top Spot and protect your dog or cat from unwanted fleas and ticks. Frontline Top Spot is a safe, fast and effective means of flea and tick control.