Triple-Rinsing and Winterizing a 2-Gallon Pump Sprayer: Rinsate to a Labeled Site, Nozzle and Screen Cleaning, and Dry Frost-Free Storage
Disclosure: This post contains affiliate links. If you purchase through these links, we may earn a small commission at no extra cost to you. Residue left in a sprayer can damage the next plants you treat and harden in the nozzle over winter. A triple rinse right after the last job of the season takes about 15 minutes. How do you clean a pump sprayer before winter storage? Spray out any leftover mix on a site the label allows. Fill the tank about one quarter with water, shake, and spray the rinse through the wand onto a labeled site, three times. Then clean the nozzle and screens, drain the tank fully, and store it dry where it will not freeze. University of California's herbicide equipment cleaning page gives a triple rinse for small sprayers: fill one quarter full, shake 10 to 15 seconds , and spray the rinsate onto untreated weeds or the use site. It says the label is the law if its directions differ. Montana State University's sprayer winterizing article says all rin...