BAYER A once a month topical flea treatment for cats and kittens over 8 weeks. It kills 98-100% of adult fleas within 12 hours of application. And it kills reinfesting fleas within two hours. One convenient application of Advantage keeps working for up to a month. Stops biting in 3–5 minutes. Kills adult fleas fasts — before they lay eggs. Kills flea larvae — before they develop into biting fleas. Break the flea lifecycle at multiple stages. P3-G1 0-9 lbs, 4 pack (Orange) P3-G1-1$38.38 0-9 lbs, 6 pack (Orange) P3-G1-2$51.91 9-18 lbs, 4 pack (Purple) P3-G1-3$38.38 9-18 lbs, 6 pack (Purple) P3-G1-4$51.91 Questions? Call toll free 1-800-892-6978 or email us at info@animalhealthusa.com