Newspaper ads are inexpensive.Note: develop your rental policy to avoid people wasting your time (3x rent, pets, smokers, application fee, proof of income, credit/criminal background, etc.)

I accept short-term.I don't accept smokers, pets, or evictions, or people on probation.

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.

To be fair to your tenants, smokers need a place.  

I would never make an outside smoking area- cigarette butts suck and you will only encourage renting to smokers.

Smokers are not a protected class.If you care about maintaining good landlord-tenant relationships and maintaing your property, you are likely to attract the type of tenant you desire.

So far I've had a tenant die the day after Christmas (a smoker) which cost me $2k to renovate his unit, another tenant sneak people into the house unapproved, constant lies, and the famous one guy always scheming to get out of the rent. 

Today:Health sharing companies are becoming a new kind of painNew art from the 1920s entered the public domainU-Haul gave cigarette smokers a reason to complainNow go have yourself a healthy day.Health care ‘cost sharing’ companies, which don’t guarantee coverage, are on the riseMore than 1m people have joined alternative health care “cost sharing” associations, which offer lower premiums than traditional health insurers -- but no guarantees they will actually provide coverage.These nonprofit organizations, typically affiliated with religious groups, are growing due to demand from desperate consumers.

Phone screening includes number of people, pets, income, when can they take possession, smokers, and criminal history.

A high quality air filter will do better but if they are smokers or have pets the 3 month time frame can need replacement every 4 to 6 weeks instead.What happens is the air filter catches more stuff it then starts restricting the air flow.This also causes the bill to go up.You can use the cheap blue filters but they need monthly replacement.2.When was the last time the duct lines and vents were cleaned??