KNOCKOUT™ E.S. Area Treatment, KNOCKOUT™ Room and Area Fogger and KNOCKOUT™ Area Treatment can help treat and control fleas and ticks around your home. Many products only kill adult fleas, leaving 95% of the population alive in the house. With KNOCKOUT Brand Products, you can now choose from a family of products that kills adult fleas, kills pre-adult fleas, kills ticks and aids the prevention of flea reinfestion. Find one that is right for you.