Remember, Letters don't change tenant behavior, Invoices do!

Landlords are allowed to take action against persons whose behavior is disruptive to the neighborhood, including evicting such persons from the property.

If you then tell about his offense, it's a slippery slope-- will you be notifying neighbors of others bad behaviors like  misdemeanors too?   

Not the behavior I want associated with landlords but happens way too often. 

You can look into a smoke outside only policy, but it is hard to make a leopard change their spots (if they have been smoking inside for years, good luck changing the behavior)...If you want to go no smoking at all,  you could just give notice with month to month or not renew when the lease ends, but the inside smokers can create quite a lot of work on the turnovers so you have all that work now (when closing taps your cash) and an early vacancy plus losing a good payer...Maybe get inside and assess the unit and behavior some and consider if it workable another year or more (who knows they could stay years) or if you need too make a change.

I will be filing a right of redemption this week and having them removed.. every day they stay and dont pay rent you loose money.. you cannot change peoples habits, behavior, or way of thinking.. some people just cant pay their bills on time no matter what.. dont we all know adults like this?

Lose - lose situation.Like I said, I would be careful, be present when he's in occupied rentals, have insurance, have temporary door lock codes that expire when he's done or change locks (good idea if you're giving any hired person access to your place), watch for behavior changes, search for recent convictions or drug issues, and so on.

To extrapolate expectatations of RE early 90s price behaviors to post GFC could be wishful thinking for some LA areas.

If you only care about maximizing profits, at the expense of the tenants livelihood (essentially) this will reflect in the behavior and turnover of the tenant. 

I wrote their landlord about the tenant’s bad behavior.