Not-in-service urinal covers are temporary covers that are placed over urinals that are not currently in use. These covers are often used in public restrooms or other facilities where multiple urinals are present but not all of them are needed at all times.
The purpose of these covers is to prevent odors and debris from accumulating in unused urinals. They can also help to maintain a clean and hygienic restroom environment by preventing the spread of germs and bacteria.
Overall, the use of not-in-service urinal covers is a simple and effective way to promote cleanliness and hygiene in public restrooms.