It is not necessary to do safety checks on dorm rooms. Res Life staff will only be in each room for 5 seconds, and cannot look through drawers or anything not directly visible. Anyone with dorm contraband will just hide it, not remove it. Res Life knows this well- they say make sure prohibited items are "not visible" rather than "not present." What is the point of checking to see if students know how to hide things?
Moreover, the regulations themselves need to change. I get it when they don't want students to have excessive amounts of alcohol in their room, but there's nothing wrong with having a shelf, a beanbag, an additional chair, etc. Seriously.