Marvin from Walla Walla Wa writes
The Chapin Backpack Sprayer 4 Gal. 20V Lithium Black & Decker Battery uses a piston pump to disperse the chemicals in the tank. According to the manufacturer, sprayers with a "piston pump mechanism" can only be used to apply liquid insecticide conentrates, not any type of bleach or wettable powders insecticides. Wettable powder insectides can only be used in "diaphram pump mechanism" sprayers. You many contact Chapin directly for more specific details on your specific sprayer at 1-800-444-3140.
Answer last updated on: 06/28/2016
