Bengal® Gold Roach Spray takes technology a step further through the use of Nylar®, a proprietary Insect Growth Regulator (IGR) the long-term effectiveness of the product is increased. The IGR breaks the life cycle by sterilizing adult cockroaches - makes them unable to reproduce. It prevents immature roaches from developing into breeding adults. Prevents reinfestation of cockroaches for up to 6 months. Kills roaches, ants, mosquitoes, and spiders. Dry spray carries the killing ingredient to the roaches. No mess - No odor