I have undertaken a Meth Testing Course from a Company accredited to carry out such training. It was very interesting and informative.
I was of the opinion that the general public as well as the Real Estate Industry who manage thousands of properties on behalf of their owners would show interest in this topic. Seems there are many differing opinions as to the validity and the cost of having these tests carried out. “Unnecessary impost on the already high costs of maintaining rental properties” seemed to be the main catch cry.
I suggest you draw your own conclusions. Google “meth testing in Australia”
You will find a plethora of information and options for you to consider if you are actually faced with this problem.