I believe its already banned seattle or statewide to consider eviction or rent debt if it occurred during pandemic,  and you can't screen for criminal background in seattle prior to that.   

But at this point he is, no offense, just an optimistic guy...maybe over-optimistic... who has bought two houses, and started a business which may or may not pay off. 

Spend some time documenting the problems, you should be able to do this in one weekend by having your tenants call you immediately when offenses occur.  

Do credit, criminal, and eviction checks.

LOL - no offense but you're off base here. 

This is my first offense.

running a credit/criminal background check doesn't work if you have no idea how to use the information. 

I have requested a criminal investigation into Harbor Funding and have the U.S Justice Department and FBI involved.

Don't buy crap paint - Behr, Dutch Boy (no offense R Gaba), etc. 6.

You definitely want to do a criminal and credit check like you would with a new tenant.