Product details:

Kills fleas within 12 hours of application. Kills all flea life stages including flea eggs and larvae to prevent reinfestation. Safe and easy to apply. Waterproof, remains effective even if pet gets wet. It purple pack Advantage is specially formulated for large cats weighing over 9lbs. The product launches a 3-pronged attack by simultaneously destroying adult fleas, larvae, and eggs. The product's advance formulation is completely waterproof, which means your cat is free to roam and be in contact with water.