Advantix is a topical parasiticide used in the treatment and prevention of fleas ticks including deer ticks (the major carrier of Lyme Disease), American dog ticks, Brown dog ticks and Lone Star ticks the control of lice and the killing and repelling of mosquitoes in dogs and puppies. One application lasts a month. Available in 3 or 6 packs. This product is called K9 Advantix in the US.