I pre-screen my tenants by saying "Total household income has to be 3x rent, no pets, smokers or evictions."

If you don't specify who your target market is and what browsers they are going to be using you might have a product turned in that only works with MAC Safari and None of your intended clients have that WEB Products AGE FASTER Than smokers who sun burn If you don't have a plan to make money from this thing the motivation to keep it going will LOOSE the APPEAL.THERE ARE NO CODING STANDARDS !!!!!!

It also weeds out the "Lookie-Lous:" folks who can't afford it, bad background/credit, smokers, etc.

No pets....non-smokers.....and a large security deposit.

Non smoker, no pets, makes 70K a year. 

If you don't take smokers, you've just decreased the rental pool significantly.

the guy needs to shave, cut his hair and not wear a college pot smoker shirt.

Send the weed smokers a Notice To Quit for Reasons Other Than Non-Payment of Rent.

His unit is very smoke damaged, and 2/3 other units have smokers in them, but aren't as smoke damaged. .

Most will fess up at this point.Most smokers can not smell the smoke and are baffled that non-smokers actually do spot it so easily.