What condition must roller-storage receptacles and their contents meet?

Roller-storage receptacles and their contents are required to be clean and free from foreign material to ensure the health and safety of clients receiving cosmetology services. This regulation is crucial as it helps prevent contamination and the spread of infections or unsanitary conditions. Maintaining cleanliness not only safeguards clients but also upholds professional standards within the cosmetology industry.

In the context of this question, cleanliness includes the receptacles being free from dust, debris, or any other contaminants that could potentially interact negatively with the products or tools used in cosmetology practices. This aligns with broader sanitation and hygiene standards that practitioners must follow to comply with state laws.