Used as a noun modifier in compounds like サニタリーボックス (sanitary bin) or サニタリーパッド (sanitary pad). Rarely used as a standalone adjective.
A sanitary bin is installed in the restroom.
utility area; laundry room
Refers to a utility space in a kitchen or service area where laundry or cleaning equipment is kept. Often used in architectural or real estate contexts.
This apartment comes with a utility area in the kitchen.
I bought some sanitary products at the drugstore.
We set up a utility area next to the kitchen in the new house.
sanitary shorts; period panties
sanitary napkin; sanitary pad
sanitary waste receptacle; sanitary bin
Borrowed from English 'sanitary'. The second sense, referring to a utility area, is a Japanese-specific extension of the word.