Black Flag Flea & Tick Spray kills fleas, flea eggs, flea larvae and ticks indoors. It also controls carpet beetles and dust mites. Use it on carpets, upholstery, rugs and hard to reach places like baseboards and moldings. When used as directed, this product will not stain furnishings or carpeting. One application works for up to 7 months. Inspect the treatment area for fleas two weeks after the initial treatment and reapply if necessary. Use as part of a comprehensive flea and tick treatment plan that includes coordinated treatment of the home, yard and pet.