And have an outdoor grill/oven with a small legal kitchenette inside (microwave, fridge, sink) for myself, guests using the actual kitchen. 

-gas grills at least 10 feet away from the house/garage-no indoor furniture being used as outdoor furniture-front porch not to be used as storage area-fire pits must be 25 feet from any structure and in a manufactured (bought) container approved for fires...you know what I mean!

I also have smokers (non-smoking building) and one with a dog (service dog for a bad knee) that is not cleaning up after it.

-Smokers welcome, but any stains on paint that need painted over come out of the security deposit.Tenant screening requirements-Landlord references required-At least 1800/month in verifiable household income.-90 days work history required.

Have they said when the smoke or where the smoke is more noticeable, In a complex I managed a patio smokers fumes went right up and in the above units door.. it's hard to control, best to eliminate if possible.. any cigarette use in common areas is lease infraction, so no halls, laundry rooms, ect for that. 

Quick question, I know most property owners dont want smokers in thier units but has anybody actually marketed TO smokers?

.- Depending on tenant class, self metering for additional services such as cable, internet, and even propane in the yard (grill season).

Several have hard core smokers and pets. 

One of the units is in decent condition and the tenant seems fine, but the other two units are rough and I would be inheriting some chain smokers who live there now.

This binds all adults to the terms of the lease.Smoking: I want to know if they are smokers.