Contains Nylar, an insect growth regulator, and the botanically derived insecticide Linalool. Kills all four stages of the flea- adult, eggs, larvae, and pupae. Breaks the life cycle and controls re-infestation for up to 210 days. Also kills ticks, roaches, ants, spiders, lice, crickets, centipedes, water bugs, silverfish and sow bugs. Can be used on carpets, drapes, rugs, upholstered furniture and pet bedding.