Russell Brazil noted that heat is a remedy for killing off infestations however; I have been told by more than one exterminator that the only way is using refrigerant and not heat.

Get to the root source of the moisture problem and remedy it.Then do the following.1.

And like the dot com, energy, and housing bubble before, because of the 'rush to the new' among their purveyors and purchasers alike - and , because of its sheer mass and lack of oversight, this sector again has the potential to tank the economy - taking with it our basic fundamental strengths:  legitimate investment funding, business expansion, jobs; and leaving general economic wreckage in its wake - unemployment, massive and increasing debt, rising government welfare and other social remedy costs,  and yes - tanked home construction and ownership.

The company I work for does a lot of Brownfields, Property Due Diligence (Phase I and Phase II, ect), and remediation (clean-up).  

If the encroachment is not recorded on the current deed, then the seller should serve notice to the person that is violating the boundary to remedy this.

So they only pursue that when other remedies prove fruitless.

If it does not, the chances that you have a significant problem are minimal.Your first remediation is to go outside to look for a slope leading toward a basement, or roof downspouts emptying very near a wall.

You do have the right to get reimbursed for the costs of remediation, but there is the blood out of a turnip problem. 

I have had two houses that continued to emit odor after those remediations.

A path has since been created in the snow and I told the tenants I appreciated their help in remediating the problem.