I have gotten many bogus EIN and SSs from one time contractors, so I don't bother with most of those.

I have a real estate attorney I met with in St Augustine but when I don't get responses from someone for several days, I don't bother and  move on.  

Then, why bother using DSCR, when you can use our no DTI program?

If they have been living there for many years, I probably wouldn't bother with it.

But like @Lucas Carl said, the amount of trouble it is vs. the actual return you're getting weighs heavily in favor of not bothering.  

On the other hand, I have purchased several houses through one realtor who never bothers to ask me for an agreement.

Get a lawyer as step one and let them override any of my thoughts :)1) Do Not send a letter to the tenant under any circumstances concerning Mold, because then you are admitting she is living in a "deadly place" 2) Start eviction for failure to pay rent3) Wait for her lawyer to contact yours (odds are she will not bother but letting her stay is not going to change anything except how long it takes to start the process)

Even though it is below 1.00 that would bother me.

It's not unheard of that they don't bother to probate if it means they have to get their siblings involved and want their share, and they have to move.

If you never hear from them again, don’t bother reaching back out.