The Chapin Mixes On Exit (MOE) System Backpack Sprayer (63950) is a cutting-edge backpack sprayer that allows you to adjust your chemical concentration with fewer chemicals wasted. Its two chemical tanks can be switched in between uses. After pumping clean water into the main tank, the dial can switch the chemical concentration from 0.5 to 9.5 ounces per gallon. Its padded straps and lumbar support give comfort to almost different types of body shapes and sizes. Its in-tank filter is effective at collecting debris and is easily removable for cleaning. Excellent for fence lines, yards, and gardens. Includes three multi-use nozzle tips.