Advantage 6pk Dog Red 21-55 Lbs

Advantage (imidacloprid), the bestsellers flea killer for your pets (dogs and cats), stops biting fleas within minutes of its application and within an hour, it starts killing adult fleas. Studies suggest that within 12 hours of application, 98-100 percent of fleas are dead. It is water-proof, i.e., it retains its effectiveness even after swimming or shampooing.