Black Flag Flea & Tick Spray Plus Growth Regulator Home Treatment kills fleas, flea eggs, flea larvae and ticks indoors. Use it on carpets, upholstery, rugs and hard-to-reach places like baseboards and moldings. This formula contains Nylar insect growth regulator to break the flea life cycle by preventing fleas from developing into biting adults for up to 7 months. It also controls carpet beetles and dust mites. When used as directed, this product will not stain furnishings or carpeting. Inspect the treatment area for fleas two weeks after the initial treatment and reapply if necessary. If ticks are present, spray directly to kill. For long-term flea control, apply 1 gallon per 750 square feet. Use as part of a comprehensive flea and tick treatment plan that includes coordinated treatment of the home, yard and pet. Treatment and prevention work together, so it's key to treat all three areas simultaneously.