Inspector suggested non repellent liquid chemical around foundation which is less expensive.  

and i know there are treatment options where holes are drilled around the home and chemical is placed down below...im in philadelphia. 

Synthetic fiber pad is (felt) is what you need

you can use a heat treatment but the best seems to be a ultraviolet light disinfectorit kills everything and that way you are not using chemicals or have any missesthese units you can rent they are not cheap but it does the job and it saves you from the exterminator feesthey are called true d uvthey use them in health care and hospitalsenjoy

I also counsel them to show compassion for people with chemical dependencies, even if you disagree with them and think they are a big fat pig.

I'm not a meth expert, so I don't know if the chemicals used are technically considered "environment contaminants," but that might require a "yes" answer.Most disclosures will ask something along the lines of, "Do you know of any other adverse conditions of the property that haven't been addressed in the rest of this document?"

It was closer to the chemical plants.

Tenant shall only use a plunger to attempt to fix a slow or stopped drain, and shall not pour chemical or other drain cleaners into any stopped or slow drains.

If the storage tenant kept dangerous chemicals, explosives, etc. there you, of course, will have significant liability particularly if you do this in violation of law

Or, has some chemical reaction occured in the blind itself from something in the house?