The Pest Pistol (Red) Mini Duster is useful for applying dry powder to small areas around the home. Just fill up the container and squeeze to release the powder. This red duster is refillable with diatomaceous earth so you can use it over and over again. The simple squeeze mechanism uses a bellows-like action to spray; there s no need for batteries or compressed air cartridges. When used correctly this product is suitable for institutional applications Pest Pistol Mini Duster:1