Kills roaches, water bugs, fleas, ants and silverfish 100% boric acid- odorless, non-staining Did you know?: As dirty as Roaches are to us; they do not like to be dirty. So when they get the Boric Acid on them, they go somewhere and lick it off themselves, causing them to get poisoned. Kills overtime, Not on contact PLEASE NOTE: This item is not to be used around children! This product Kills roaches, water bugs, fleas, ants and silverfish. This item is good quality and extremly effective.