@Mary801
" wouldn't that leave me responsible if police had come to the house"....why?
Is a hotel responsible for a guest smoking pot, o drinking alcohol whilst underage , in a hotel room?
Those people are adults and are responsible for their own actions, both legal or illegal.
Your place no doubt wasnt the first where some guests smoked marijuana or drank alcohol underage, and no doubt will not be the last.
Smoking marijuana or under age drinking, in a private residence would not be top of the police priorties, I would not imagine, unless a person then caused a disturbance, drove a vehicle while high or drunk or did some other illegal activity as a consequence of using the marijuana or drinking.
"We found a bottle of vodka we had stored in our pantry was missing "
well,that is theft ...although difficult to prove ...I would not have alcohol out in the house...lock it all away
You no doubt put in your house rules that undertaking illegal activities are not permitted
I cant see you being responsible unless you provided the marijuana and/or alcohol