I simply let the worst know that I would not be renewing their lease (I gave them ~50 days) and they drug their feet so I gave them a 3 day.

I only flip now and do not want to deal with tenants that could turn out to be crazy drug people, terrorists, gun runners and or sex traffickers.

Any advice is greatly appreciated.8bd/4bth legal 3 unit Unit 1:2/1 TNT pays all, rent 550Unit2:2/1 TNT pays all rent 475Unit 3:2/1 rent 450Asking price 100kARV 140kDp 5% at 5k loan AMT 95kLoan interest at 4%Expenses:P&I: 453Insurance: 100 Water sewer: 100Prop tax:300Repairs: 147.50 at 10%Capex:147.50 at 10%Vacancy:118.00 at 8%Cashflow: 158.46Cap rate:5.25%Coc ROI:38.03%GRM:5.65This represents a purchase at asking price however when I viewed the unit a couple things stood out the attic seemed to have done a little moisture issues so I'm guessing the roof might need replacing, also the tenant in one unit had been therefore 10 years, thus the rental are below market value from comparables a these units rent could conservatively be rented for 600 600 and 525 boosting cf to 383.46, the first unit has lower ceiling also the one tenant who'd been there for 10 years complained of the first unit being occupied by gang bangers who sell drugs out the unit.

The original roommate has caused much disruption here, between her alcoholism and related violent outbursts, to her drug use and threats, including calling the local police multiple times for a variety ridiculous things, all of which is documented, and more than once was told by the police she was becoming a habitual caller and a nuisance, then threatened with arrest.

Arrive early to ensure tenant hasn't left drugs or guns laying about.

I would like to add things like regulations on drug use, smoking inside, subleasing, etc.

As for drugs, it may have occurred many years or months ago.

Google Maps are great but it wont show (maybe someone standing on a street corner selling drugs, or the sounds and roads).

, drug trafficking, etc..., but some tenants can be "creative".So, what will I add to my next lease update?  

They check all your symptoms over video and even call in prescriptions to the pharmacy.