They cracked (not smashed) a window and removed and threw away the smoke detectors. 

What’s the best way to handle a tenant who has breached the contract on smoking? 

If there is smoke or water damage contact a restoration contactor (I've had clients use Belfor and they were pleased with their service (do not sign a contact with any restoration company without the ok of the Insurance adjuster.  

Originally posted by @Lucas Carl:@Julie McCoy I’m glad this person is getting smoked.

Where there's smoke there's fire and upon additional diligence found his company didn't syndicate the deals they claimed and was operating what amounts to an unlicensed broker-dealer business.

There are a lot of issues that can come up from growing plants inside the home, so most landlords are just saying no smoking and no growing inside the house. 

NO smoking, alcohol or drugs. 

I ask questions in my ad.  2 main ones are How much do you smoke? 

Rather than perform tests to make life more expensive these simple steps will cure most issues.Yeah, Killz can be a great solution for covering stains, especially smoke related.

They were a bad tenant, smoked, paid late and disappeared from time to time.