I use it to clean the 3 gallon diaphragm style backpack sprayer which I use in my apple orchard. Typically is used for wettable powder fungicides and liquid insecticide. I have used it twice so far. It seems to do a slightly better job of removing the residue than the sprayer cleaner I have been using in years past. It is also much more expensive, so I hope it Protects the internal components of my sprayer in the long run.