Pneumatic pesticide duster for treatment of structures

Claim 1

An improved method for treating structures with pesticide dust by placing said dust into pest harborages within said structures, the improvement comprising closely controlling the distribution of said dust within said harborages by imparting a friction induced electrostatic charge to said dust to mutually repel and suspend said particles while electrostatically attaching said particles to the structure and pests therein, wherein the dust is applied by (a) placing pesticide dust in a dust reservoir having attached thereto an air input aperature connected to a source of pressurized air and a dust/air mixture outlet aperture connected to (b) a manually operated valve regulating the flow of dust/air mixture, and (c) a metallic tube downstream of said valve capable of imparting a friction induced electrostatic charge to discharged dust, said tube having an opening up to about 3/4 inch, and (d) a flexible tube attached at one end to said air input aperature within said dust reservoir vessel, and having a free end depending within said reservoir vessel, such that air/dust mixture released by actuating said valve allows air to enter the dust reservoir from the pressurized air source through said flexible tube, said tube being agitated by the incoming air exiting through the free end of said flexible tube and directing said air throughout said reservoir such that substantially all dust is entrained by said air and forced through the exit aperature when the valve of (b) is actuated.