Los Cabos will begin a fumigation campaign this month in Cabo San Lucas to reduce the population of Aedes aegypti, the mosquito that transmits dengue. Why fumigation alone is not enoughAccording to local health officials, fumigation kills only adult mosquitoes that are airborne during the application. Common trouble spots include rain-filled tires, bottles, cans, flowerpots, buckets, water storage tanks and roof areas that collect water. Los Cabos has seen increased attention to public health campaigns in recent months, including highway cleaning efforts and other sanitation initiatives. Removing those breeding sites before fumigation starts will improve the overall outcome and reduce dengue risk across the city.