Final answer:
Dining room trays need to be washed, rinsed, and sanitized every 2 hours.
Step-by-step explanation:
The dining room trays should be washed, rinsed, and sanitized every 2 hours.
This is important to maintain hygiene and prevent the spread of germs and bacteria.
Regular cleaning ensures that the trays are safe for use by different individuals throughout the day.
It is also a good practice to wash, rinse, and sanitize the trays immediately after they have been used by someone who is sick or showing symptoms of illness.