Municipality-approved chemicals: the line between treatment and poisoning
The phrase to listen for is 'municipality-approved chemicals'. Approved residential products in the UAE are mostly modern pyrethroids, insect growth regulators and gel baits: compounds with low mammalian toxicity at label rates, designed to break down within hours or days indoors. A legitimate technician can tell you the product name, show you the label in Arabic and English, and produce a safety data sheet if you ask.
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.