T/F: Metal brushes and picks are safe to use for nozzle cleaning.

• A. True
• B. False
• C. Sometimes
• D. Not recommended

Answer: (B)

Cleaning nozzle components requires gentle, appropriate tools because nozzles are precise parts with tiny passages that can be easily damaged. Metal brushes and picks are too harsh for these interiors: their hard bristles and edges can scratch or burr the inside and the orifice, alter the spray pattern, or damage seals and threads, which can lead to leaks and unpredictable droplet sizes. Small metal fragments or bristle pieces can break off and contaminate the spray solution, potentially clogging passages or changing how the nozzle delivers chemical. For safe maintenance, use softer, manufacturer-approved tools such as nylon brushes or plastic picks designed for nozzle cleaning. This makes metal brushes and picks not safe for nozzle cleaning.