They can gaslight you, but that is just a distraction.They actually sell wipes to detect pot residue on walls, but I am not sure if they work and I would not spend the time or energy in engaging in establishing "proof" - you'll put up walls and they'll just dig more tunnels.Instead, I would:Contact their case worker ASAP, cite the behavior as a lease violation with her, and state that in addition to it being a breach of lease, it is creating health concerns for your family. 

I wound up buying Class C SFH in 2023- the feedback from property managers was that more desirable tenants will pay more rent to not live next door to someone with shared walls/ceiling/floor.

Same when you go to buy a car look up on the wall of Salesmen of the month its generally the same two folks..

I remember when I started about half of the listing had the almost exact same accent wall.

Write down your screening criteria in detail.Post it on your office wall, and refer to it often. 

Once they get established, they tend to spread between units through walls, outlets, and plumbing chases.I’d recommend a coordinated treatment plan for the whole building rather than trying to pinpoint one tenant as the source.

I've drawn $2.3M of the loan for a portion of the acquisition. site clearing and preliminary site work/retaining walls.  

I’m hoping to use mine as seed capital for a few small rentals, but don’t want to hit a wall if the appetite for that product has dropped.Appreciate the insight — that “BRRRR’s not dead, it’s just matured” line really landed with me. 

It seems like a great majority of the calculators here are behind a pay wall.

Back in 2008 and 2009, during the foreclosure wave, I saw cases where people poured concrete down drains, stripped copper wiring from the walls, left water running to flood properties, and caused extreme mold damage.