In the UAE, pest control sits under public health law, not general maintenance. At the federal level, the Ministry of Climate Change and Environment (MOCCAE) registers every pesticide that may legally be imported, sold or applied, and it maintains a list of restricted and banned substances. No company, however large, is allowed to use a product that does not appear on the approved register, and residential use faces tighter limits than agricultural or industrial use.
On top of the federal layer, each emirate's municipality licenses the companies themselves. A legitimate operator holds a trade licence with a public health pest control activity listed on it, a separate municipality permit for pest control operations, and individual approval cards for its technicians, who must pass municipality-run training on safe handling, dosing and storage. A cleaning company that offers to 'spray for cockroaches' as a side service, without that activity on its licence, is operating illegally even if the chemical it uses is approved.