Originally Posted by
kennycrudup
I use the "chain" lock as a matter of course, as this happens to me every third stay night or so- by
housekeeping, who apparently will try and enter a room no matter how much noise/repsonse they hear coming from inside; I'm starting to think it's on purpose (breakroom story contest, anyone?

).
Most hotels have this unwritten policy, some before the Las Vegas shooting but definitely more after. It's also to check for dead bodies. Three people passed in 3.5 years where I worked...