Kills fleas and ticks and contains a unique combination of ingredients that kills adult fleas, as well as flea eggs and larvae. Nylar, the flea growth regulator (FGR), prevents fleas from developing into the adult biting stage. Water-based formula reaches fleas hidden in carpets, rugs, drapes, upholstery, pet bedding and floor cracks. Protects your home from reinfestation and provides continuous flea protection for up to 7 months with no objectionable odor or sticky mess. When used as directed, will not stain furnishings or carpeting.