If you have a plumbing bill of $200 to clean out some tree roots, what happens when the tenant refuses to pay?

If a federal tester called, my first question would root them out. 

The judgments are often times rooted in a worldview of meritocracy. 

I will be rooting for all the young people who are trying their best to provide financial stability for themselves and their family.

They can cause blockages in your building’s sewer, especially older pipelines that may have greases, roots, or other obstructions already existing.

Tree roots are a common cause of bucking but sometimes cutting them out will eventually kill the tree.

Thus far, she has made up numerous lies to the neighbors, to try to get them rooted against me (developers are usually not a well liked bunch as it is anyway).

If the property is without rent for months and your pool of tenants is almost nonexistent (which is what it sounds like), then you have to evaluate the root cause of that.

I'd charge a holding deposit and collect it so that if they back out you have something for your lost time.I give my applicants less consideration if they are moving from out of the area since they are less likely to stay long if they don't have roots, but I have found that in my area and probably isn't prevalent.  

Ferreting out the person behind something like that is John's job, but even most shysters won't put in the time / effort it takes to pierce multiple corporate veils, find the trust at the root of the structure, then make the paper chase to find the protected (non-public) information which would lead to a person who may or may not be in control of the entities and their activities.