Of course, everything above might be simple ignorance since there's a lot I don't know (ie maybe your fired them for selling drugs).

You can do simple A/B testing, where you send half your list one piece (A) and the other half another piece (B), then see which one has a higher response rate. 

I promise you it will cost you far more to put the first person who passes the fog and mirror test in your home to avoid a vacancy, than it would ever cost if you set reasonable rental criteria and screen to that criteria.FYI that in 2020 the VA cap is going away!  

That property 228 broadway Newburgh ny had a drug dealer,a non paying tenant and vacant store.

I have reasonable rules when rent: "no illegal drugs, smoke outside and pickup after yourself."

After the sale I found out the owner had dementia and was being leeched off of by her drug addicted family.  

There are plenty of good well paying jobs around, mostly factory but the work is here and close by although I’m new to the area (5 months) I’ve noticed some hot spots for crime, drugs mostly, but what confuses me is one block is decent, yards maintained, clean looking, nice curb appeal, but then you go a block down and it looks like a war zone.

Anyone who is 18 years old who takes a 9 day class and can pass a multiple guess test can become a licensed agent in my state (Missouri). 

It was a drug house/ with prostitution in full effect.  

Good cash flow, CoC ROI, passes the 1% test.