If you use liquid herbicides, insecticides, or fungicides then you know how important avoiding cross contamination is. Spraying a tree with a mix that has round-up residuals in it can quickly become a disaster.
Is there any way to be sure a product is never mixed into an unintended batch, by way of residuals, other than having a separate sprayer for each product? What about buying a used spray tank, how can you be sure there isn’t scythe or triplet remaining in the lines before using it for your tree work?
The bottom line is you can’t know if there are some remnants in a spray tank and you can’t afford to take chances, but there is a way to properly clean out a tank. By using Lesco-sol spray tank cleaner you can thoroughly clean out any questionable equipment.