If it's this kind of sabotage, I'd go public, then explain why I will be requiring ID for all rest room access from now on.
“If it’s this kind of sabotage, I’d go public, then explain why I will be requiring ID for all rest room access from now on. “
It’s not the patrons that can do this, and it can’t be done from the bathrooms.
It’s employees who have access to the big building-wide plumbing chases in some machinery room which have 8” or bigger threaded access ports to the DWV system.