Illicit drug activity can be cause for concern due to potential health and safety risks to current and future occupants. In Western Australia, many thousands of homes may be contaminated, which affects habitability, due to illicit drugs being made or smoked in them, especially methylamphetamine (meth, ice).
The Department of Health has provided guidance regarding remediation in the instance a premises may have illicit drug contamination.
More information –
Illicit drug contamination