Talk to your local Sheriffs office. They will tell you they're guidelines, if any unfortunately and if there are State guidelines.
Call a local hygienist who does meth residue testing and they should be helpful.
Is there money in it? Depends on if you can find a willing payer....We only do insurance reimburseable work OR cash up front.
Interlink Supply carries the products and equipment for this service and offers basic instruction if you are buying the equipment.
The market for this in each area is different. SOmetimes different rules by county or by state. It is possible to test to the level if meth was ever smoked in a home. Three years ago the tets were only sensitive enough to detect levels associated with manufacturing. I suspect as the etsting gets more sensitive, more and more places will require it. A few counties require testing and disclosure of any meth residues when a home or apartment is rented or sold. That can generate a lot of work.