He disclosed that he has a medical marijuana card but would only smoke outside. 

I would mention to Tenant B that I was visiting Tenant A and smelled what seemed like marijuana smoke coming from their side and remind them there is no smoking permitted inside the house.

The 4 guests smoked marijuana in the house (strong smell), broke a window blind and a picture, put a hole in the bathroom wall, chipped an end table and worst of all vomited on the couch and front porch.

Originally posted by @Eric Mayer: Not sure how much Marijuana you have been around, but some smells terrible and all of that can happen without smoking it inside.

I do not care if someone had a marijuana charge 12 years ago.I do care if its 10 guys coming in for a bachelor party. 

Cap-ex was needed for:* Original 1960s kitchen, appliances out of order* Original 1960s Pepto Bismol colored tiles in the bathroom* Tobacco and marijuana stains/odor in every room* Stained carpet covering damaged hardwood* Broken side door from forced entry by police* Zero recessed lighting with 3 layers of blinds on every window* Lots of trash in the basement both on the floor and mounted to the joists overheadCheck out the Zillow listing at: https://www.zillow.com/homes/119-Jasper-Pl-Alexandria,-VA-22...What made you interested in investing in this type of deal?

Some cities like S.F. are even providing FREE alcohol, marijuana and methadone to these people.

I am wondering if anyone has experience with Wynd Smoke Detectors and if they’ve had success with them detecting marijuana smoke?

Minut seems to be less expensive, but according to Wynd's website, they say Minut's smoke monitoring is in Beta and doesn't track marijuana smoke.

We have a pretty rural place and Idaho has some of the most strict laws around marijuana use so that hasn't been an issue for us.Smoking in general has been a problem a couple of times.