But there was a small area near one of our buildings and we put up a nice little picnic area with a pergola, picnic bench, and grill.

Smoker all day.

I had a Chain smoker in a property I took over and they refused to stop smoking inside so they were sent packing.  

@Gail White wrote in an earlier post:I have made an offer on a house where there has been a very heavy smoker living for a number of years.

.  Applicant must be a non-smoker. Occupancy is limited to 2 people per bedroom. Pets are not allowed.

They all have pretty good credit scores, good records, no pets, non smokers.

If older than 5 years,  replace it.Create a removable durock or fire proof enclosure within the closet,  ad a vent grill.

In your ad, put........No dangerous breed animals or petsNo smokers of any kind,No evictions, everNo felonies, everThere is a $50.00 Non-refundable background check that you (The prospective tenant) will payYour gross income must be at least 3x the monthly rent.Then when they call......dont pickup the phone.........let them leave a voice mail...........If they sound like they have sense......then TEXT them back and ask them to verify the above.Once they verify then arrange a showing

First, the people that lived there previously were smokers.

I charge the same as a motel, but people get a kitchen, washer/dryer, their own bedroom, a living room, a yard, a deck with a grill, and the inside of a house that looks like Hugh Hefners mansion.