Large commercial farm sprayers and small hand sprayers are used for many different reasons and with a variety of chemicals. There are several reasons why a tank cleaner is essential in washing your sprayers no matter what their size. Some of the chemicals used can be harsh and start corroding parts on your sprayer. Tank cleaners will ensure the harsh chemicals are washed from these pieces and extend the life of your sprayer. Another reason to use a tank cleaner is to avoid cross contamination. No one wants to kill their driveway weeds one week and the next week kill their garden because their was pesticide residue mixed with your fertilizer.