Self-contained sprayer\/foamer features a plunger-style pump and a large reservoir for pre-mixed, noncorrosive liquid cleaning products, fertilizers, weed-killers, pest-control solutions and more, making it ideal for either pretreating carpets for scrubbing\/extraction or treating plants, gardens, lawns and structural seams with various goals in mind. Ergonomic "thumb-lock" facilitates fatigue-free spraying. A removeable foaming nozzle allows you choose between a tight stream or a broader, foam spread. At full compression, the unit is capable of up to a 70 PSI output.