Our SentryHome Household Flea & Tick Spray contains a unique combination of ingredients that kills fleas, ticks, flea egg and flea larvae. This flea and tick spray even kills fleas before they grow up to bite. Nylar®, a unique ingredient in this flea spray, continues to kill fleas for 210 days (7 months) by preventing their development into the adult biting stage. Reaches fleas hidden in carpets, rugs, drapes, upholstery, pet bedding and floor cracks. Protects your home from reinfestation and flea build-up, your pets and family from bites. One treatment with this spray gives continuous flea protection for 210 days. Leaves no objectionable odor or sticky mess and, used as directed, does not stain furnishings.