[widgeon13]

That is definitely a no-no and now that you know it must be disclosed but the courts should pass the cost associated with repair and decontamination along to the original owners. They are responsible, house never should have been sold in that condition.

I would get in contact w/ local FBI/State Police as well as state HAZMAT office. Contamination is more than likely not just in the house but the ground around the foundation and could be in the water supply depending what kind of well and how materials were disposed of. You can be certain, whoever ran the lab didn't dispose of according to proper procedures for waste disposal.

Don't mean to be an alarmist but this ***** is bad stuff. As an EMT when ever we think meth is involved we call HAZMAT (as policy) to get green flag for safe situation before entering structure.

Good luck!