Which statement about sprayer cleanup is not recommended?

Which statement about sprayer cleanup is not recommended?

• A. Sprayers should be thoroughly rinsed with water/detergent solution for several minutes.
• B. When storing your sprayer, add some lightweight oil in the tank before final flushing.
• C. Leftover pesticide residue in the spray tank is permitted when changing products.
• D. Rinse water until it runs clear.

Answer: (B)

The practice being tested is keeping the sprayer clean so there’s no cross-contamination or environmental risk. Proper cleanup means flushing with water and detergent for several minutes to break up residues and then rinsing until the water runs clear, so any pesticide left in the system is removed before storage or switching products. It’s also essential that no pesticide residue is left in the tank when you change products, to avoid contaminating the next product and harming crops or the environment. The statement about adding a small amount of lightweight oil to the tank before the final flush is not recommended because oil can leave a film inside the tank, hoses, and nozzles. That film can mix with the next pesticide product, potentially changing its effectiveness, causing spray deposition problems, or introducing contaminants. Oil also complicates thorough cleaning and can lead to residue carryover. Follow the manufacturer’s cleaning and storage guidance, and rely on water/detergent flushes and rinses until the water runs clear to ensure a clean, safe sprayer.

The practice being tested is keeping the sprayer clean so there’s no cross-contamination or environmental risk. Proper cleanup means flushing with water and detergent for several minutes to break up residues and then rinsing until the water runs clear, so any pesticide left in the system is removed before storage or switching products. It’s also essential that no pesticide residue is left in the tank when you change products, to avoid contaminating the next product and harming crops or the environment.

The statement about adding a small amount of lightweight oil to the tank before the final flush is not recommended because oil can leave a film inside the tank, hoses, and nozzles. That film can mix with the next pesticide product, potentially changing its effectiveness, causing spray deposition problems, or introducing contaminants. Oil also complicates thorough cleaning and can lead to residue carryover. Follow the manufacturer’s cleaning and storage guidance, and rely on water/detergent flushes and rinses until the water runs clear to ensure a clean, safe sprayer.