The JT Eaton 530-RD insecticidal duster holds 1.2-ounces of diatomaceous earth or 5-ounces of boric acid to apply insecticide dust into wall voids and other hard-to-reach areas. This model features an "O" ring at the adjustment screw to eliminate or reduce leakage and its internal spring reduces user fatigue. For extra protection, place the tip over the adjustment screw to insulate against leakage. Simply pop off the top, fill the powder duster half full with appropriate dust and reapply the lid. This duster has a red powder coat at the bottom of the duster and on the handle for easy identification. This insecticidal duster can be used upright or inverted for application control and offers fast disassembly. This product comes in an 18-pack and is color coded for insecticidal identification. JT Eaton's mission is to manufacture and distribute products designed to eradicate pests. We continually seek out new ways to provide consumers with the knowledge and products they need to create a healthier and safer world. JT Eaton has been family owned and operated since 1932 and they manufacture and sell only the highest quality products.