Jt Eaton 530 (Multi) Pro-Bulb Duster for application of dusts and small granular baits into voids, cracks, crevices and other tight spaces. Fill the duster 2/3 full with desired dust product. Replace the cap on the duster and flip it upside down with extension on the top. Shake the duster slightly to agitate the dust and compress the Pro Blow Duster to apply a puff of dust to the target area. If a visible residue of dust is left then you are over-applying. Pop off top for easy filling Internal spring design causes lass hand fatigue Galvanized steel parts for durability and long life Can be held upright or inverted for optimal Equipment