When should pesticide equipment be cleaned if you plan to switch pesticides in the tank?

• A. Immediately after use
• B. Before mixing
• C. Only at the end of the day
• D. Only if a spill occurs

Answer: (A)

The main idea is preventing cross-contamination when changing pesticides. Cleaning equipment right after finishing with one product removes the residues while they’re still fresh, so none of it can transfer to the next product you mix in the tank. This helps avoid crop injury, ensures the next pesticide works as intended, and keeps labels and safety practices intact. Waiting until the end of the day lets residues stay in the tank and on the sprayer, increasing the chance of carryover, and only cleaning if a spill occurs doesn’t address routine switching. Cleaning before mixing is important, but immediate cleanup after use is the most effective way to prevent carryover when you plan to switch pesticides.