My properties are in B+ areas.I see in writing what they say they use to screen tenants and it looks as good as any I've seen. 

So, even a small negative like a $50 unpaid cell phone bill that goes to collections when you switch carriers tanks their score.

 @Patrick Pan not all states take such measures, and you can ask a reputable tenant screening company in your area how that works.  

Screen them as you normally would - does their income substantiate their portion of the rent +/- a little for changes in what the housing authority will pay out?

Not a lot of screen doors or porches. 

I can't remember the cost, not too bad, but no phone callsI sent out 1,000 mailers (letters) I designed in envelopes a week for a couple of years and made a ton of money buying properties using "creative finance" some call subto.

We screen heavy and have never not got paid.

However I also probably would have tried to troubleshoot over the phone before sending the plumber which may or may not have removed the need to send someone.

Go to GET STARTED > EVENTS AND MEETUPS at the top of your screen.

Way too much time spent on phone calls and on chats etcYeah it’s especially frustrating when you get the autopay all set up and then they transfer the loan to a new bank or a new servicing company takes over and it’s back to square one again.