Best in class, ease and innovation combined, the Chapin self-cleaning Backpack sprayer is loaded with features for the DIY Homeowner yet rugged enough for the Professional. Boasting the innovative and patented JetClean, self-cleaning pump technology, that directs a powerful burst of liquid through the tank filter with each downward pump stroke. The filter stays free of debris virtually eliminates clogging. The benefits continue with a 4 gal translucent poly tank that has an extra wide, 6 in mouth opening for easy filling and cleaning, a 3-stage filtration system, cushion grip poly shut-off, 3 nozzles for a variety of applications and a stainless steel wand. Another innovative feature is the swing away pump handle that can be set up for either right or left-hand use and it folds up when you're done, providing more compact storage. Padded shoulder straps and back pad will give you hours of comfortable spraying. Compatible with common fertilizers, weed killers and pesticides.