Municipality-approved chemicals: the line between treatment and poisoning
The most serious violations involve fumigants, above all aluminium phosphide tablets, which release phosphine gas. The product is restricted to licensed agricultural and warehouse fumigation under strict controls and is banned outright in residential settings across the emirates. It has caused fatalities in the region when used illegally in flats and villas, because the gas travels through wall cavities, drains and AC ducting into neighbouring units while occupants sleep. Enforcement tightened sharply after residential incidents, and municipalities now treat illegal fumigation as a criminal matter, not a licensing slip.
The practical rule for households: no legitimate residential treatment in the UAE involves sealing a unit with tablets or powders and leaving. If anyone proposes that, or offers a mystery chemical decanted into an unlabelled bottle, decline the job and report it to your municipality. The saving on a cheap quote is trivial against the downside.