K9 Advantix II By now you've heard the buzz about K9 Advantix II. This highly effective flea and tick treatment contains a potent formula to combat fleas pests fast. Eliminate fleas and other insects completely by attacking them at their source and preventing their growth into your dog’s surroundings. K-9 Advantix II offers complete five-way flea and insect protection. Safe Flea Control Flea killing properties such as adulticidal, larvicidal, and ovicidal kill fleas and prevent new ones from emerging. K-9 uses an insect growth regulator called pyriproxyfen that disrupts hormone signaling of insects, preventing fleas from maturing. This integrated flea control (IFC) includes imidacloprid which kills fleas through contact and helps reduce flea allergy dermatitis. Features: -Kills fleas on pets within 12 hours -Kills fleas before they lay eggs -Waterproof -Fragrance-free -Convenient, easy to apply Usage Application Instructions: Apply the entire contents of the tube evenly to three to four spots on the top of the back from the shoulder to the base of the tail. Monthly application. DO NOT USE ON CATS! Length of Effectiveness: Under normal conditions, the product is effective for a month. However, in cases of severe flea infestation, retreatment may be necessary earlier than four weeks. Do not retreat more often than once every seven (7) days. After flea control is attained, return to a monthly retreatment schedule. Keep out of reach of children! CAUTION: See back panel of product for First Aid information. For Directions for Use, and Storage and Disposal, see supplemental labeling inside.