After each use, the filter and jets or a tool bath must be:

The correct answer emphasizes the importance of maintaining hygiene and safety in a manicure setting. After each use, disinfecting the filter and jets of a tool bath is crucial to eliminate any bacteria, viruses, or fungi that could pose a risk to clients' health. Tools and equipment that come into contact with water and potentially with skin or nails can harbor pathogens. By disinfecting them after each use, you ensure that the instruments are safe for the next client and help to prevent the spread of infections.

This practice aligns with state regulations and guidelines set by health authorities, which prioritize sanitation in personal care establishments. Proper disinfection protocols help maintain client trust and the overall reputation of the salon or spa.