Each 3 pounds. Each $20. HOW IT WORKS - Fleabusters Rx for Fleas Plus attaches to larvae as they wiggle through and then dehydrates them. Its neutral pH of 7.0 makes it safe for carpets, but also resists repelling pests. Roaches, ants, fleas, and other household pests can sense and avoid alkaline or acidic substances, but crawl right through the natural pH of Fleabusters products.