We want to keep them, and I saw no evidence of them being smokers or having pets.

NO SMOKERS.  

-------We once bought an 8-plex that was occupied by some undesirable tenants (a stripper who had frequent late night "guests", pit bulls in two units, a single mom who couldn't afford the rent, smokers, and a guy who had lots of cats).

You don't want tenants having 2 cars each and bothering the neighbors who then complain and get your rooming house shut down if it violates zoning.Only allow non-smokers.

I will make an exception for a small aquarium with non-agressive fish or a goldfish bowl.We also have a strict NO SMOKERS policy too because de-smoke-ing units has cost us thousands.

Here is the description of work.tenant has moved out, please change locks and get make ready estimate We have a estimate that come in at 5743.67 and included material and labor Replace lock and secured unit Remove garbage leftover in the unit by prior tenant Remove nail and decal from wall and ceiling Prep , patch, and finish large hole in the living room , stairs case and bedroom walls Prep and paint entire unit Remove and replace damage and stained carpet on the living room, dining room, 3 bedrooms , hallway and stairs tread Replace broken outlet,switch and plate cover install missing carbon monoxide and smoker detector Repair kitchen cabinet clean entire unit Note: this estimate those not include a C/O ,section 8 or lead swipe and all unforeseen , alteration and deviation from above specifications involving extra costs will be executed only upon written orders, and will become an extra charge.

I did and said nothing and it was paid.This tenant lives on social security, I inherited her when I bought the compound last October, she has been there going on 11 years, smoker inside home .

@Yi Osmera, you should not discriminate against a smoker, but you can specify that they not smoke on the premises (which I do for most of my rentals). 

Just wondering if we have any cigar smokers on BP.

I'm buying a 4 plex in an area with cheap rent and a lot of smokers in general, a blue collar area.