The 4 ounce Bulb Duster has a screen inside to break up the particles and create a very fine dust. It's a very basic duster but works well. If you plan on using it more than a time or two you may want to think about upgrading to the J T Eaton Insecticidal Duster #530
Product Information
Bulb Duster 4 oz is made of a long lasting rugged construction, heavy duty rubber.  May be used to apply dusts behind electrical outlets and light switches. Ideal for homeowner use. This duster will hold up to 4 oz. of dry product. It's economical and useful to apply pesticide dusts. Works well with fine dusts such as Delta Dust, Evergreen Dust, Timbor, Borid Acid Dust  and Eco Exempt or Pco D-X Dusts.
