KONK 418 (commercial use) is an insecticide compatible with BVT dispensers. With 1.8% pyrethrin, it contains twice as much of this active ingredient as Konk 409. Made from pyrethrin, a substance that attacks insects’ nervous system and is found in the chrysanthemum flower. This product will be your ally to eliminate and repel flies, gnats, mosquitoes and harmful flying insects in buildings, commercial establishments and homes. Simply place Konk 418 in the BVT dispenser and let it work for you!