Penetrate deep into cracks and crevices to flush out bugs with this Raid Fumigator Fumigating Fogger 3-Pack. It s simple to use and kills pests on contact. Raid max fogger has a fresh scent and leaves no messy residue behind for you to clean up. Each treatment needs about three hours to work effectively. The dry white fog of this Raid fumigator fogger reaches under furniture and appliances where bugs could be hiding. One entire room is cleaned over the time window. Each box comes with three applications so you can use as needed or fog three different rooms at the same time. A delayed fogging action lets you safely exit the room before the device begins working.