My signal-to-noise ratio coming from Zillow et al. is not good.  

Having them fill out an application is the only way that you get to make a decision about removing them that will stand up in court.It also sends a clear signal that there is a new sheriff in town and now there are rules that must be followed. 

@Quentin MitchellWe tend to only raise the rent when we have signaled to them the raise was coming a year out.

This tenant is signalling to you that he will be a handful.

And the fact that a contractor was there was a signal to someone to check the locks after they left.  

Ignore/laugh about the crazy texts and look for the signal through the noise.

In this case, her refusal to develop a payment plan or even communicate with me is a clear signal that she has no intention of doing the right thing.Every market is different.

Does any of this signal a Red Flag for you?

@Jonathan Godes I appreciate the bat signal.

When we call the short sale department, we are put on hold (after entering our loan #) and then it goes to a fast busy signal as if someone picked up and immediately hung up.