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.

I purchased a 3/2/2, 1366 sqft rental home built in 1986 (roof 8-10 years, no pool, smoke alarm, etc) in May 2023.

This questions sometimes will smoke out what needs to be done.

They are partying, drinking, playing loud music, burning their BBQ, smoking, and throwing up all over the carpet and couches. 

The other issue is that these same tenants smoke, not on the property, but they put the butts in a can on the wooden porch and then dispose of them - gross really - anyway, Ontario is going the way of BC more and more - very tenant-friendly. 

@Chris LammAre they really doing as much as they say. 90% of it is smoke and mirrors

I purchased a 3/2/2, 1366 sqft rental home built in 1986 (roof 8-10 years, no pool, smoke alarm, etc) in May 2023.

I purchased a 3/2/2, 1366 sqft rental home built in 1986 (roof 8-10 years, no pool, smoke alarm, etc) in May 2023.