MAKKAH — The Presidency of Meteorology and Environment told Makkah Municipality to consider a different pesticide to the one used to exterminate flies as they have grown immune to it, Makkah daily reported. The presidency's Environment Media and Awareness head Naif Al-Shalhoub said flies and mosquitoes are spreading these days due to rain, piled waste, insect reproduction and a lack of extermination campaigns recently. He said: “Saudi Arabia has 30 different kinds of flies. “The thing about flies is that they can adapt to pesticides and lethal chemicals after a while. “Therefore, every generation of flies needs to be exterminated with a different pesticide. “The municipality is doing a great job in exterminating insects but they must change the pesticides in order for their efforts to be effective.” Makkah Municipality's PR head Osama Zaitouni said the local authority has cooperated with the local Health Affairs and the Ministry of Agriculture to run field extermination campaigns in alleys and residential and mountain areas. He said: “We focused on locations where waste is usually dumped, mountaintops, wreckage areas, and swamps. “We use a variety of techniques in our extermination campaigns. “We use pesticides that are deadly to insects but non-poisonous to humans; manual and mechanized spraying of pesticides; and baits to lure the insects.” During the last month alone the municipality exterminated 252 reproduction locations for flies and sprayed 336 farms, said Zaitouni.