The Puffer handheld duster is the perfect duster for all dusting applications. The durable, high quality, clear body of the bellow allows full visibility of dusts. This economical, long lasting, and time proven design provides excellent control of dust and small granules. To use the duster, remove the rubber stopper and fill the bellow (container) half-way full with an insecticide dust. This allows for air to mix with the dust before exiting the nozzle. Place a penny, marble, or small rock inside of the bellow to break up any dust clumps. Turn the duster upside down (stopper facing down) and squeeze the bellow to compress the spring and inject dust into the desired area. Shake the duster between each squeeze to increase the amount of dust deposited. The puffer duster includes a built in cleaning rod This Puffer Duster does include insecticide dust. Insecticide dusts must be purchased separately.