We only use public health insecticides registered with the EPA and approved by the Clemson University Department of Pesticide Regulation for use in South Carolina. The selection of a specific insecticide is dependent on the habitat, the developmental stage of the mosquitoes, and the environmental conditions encountered by the certified applicators at the time of treatment. We use the following general conditions to control adult mosquitoes (according to EPA regulations) for the safe and effective application of public health insecticides by truck or aircraft:
- at least 50° F
- up to 20 mph for wind speed
- no precipitation
- no fog
- no thermal inversion layers.
We apply each formulation between the minimum and maximum rates as recommended on the manufacturer's label, whether by hand, truck, helicopter or fixed wing aircraft. We dispense the public health insecticides used for larviciding and adulticiding at very low concentrations. These low concentrations, including natural degradation by ultraviolet (UV) light and water, ensure minimal risk from the products. By law, any application of public health insecticides for mosquito control in South Carolina must be performed by an applicator or supervisor certified in Public Health Pest Control. The certification and training of applicators by Clemson University stresses the safe storage, mixing, handling and application of these products.
Annually, we review the possible development of resistance by mosquitoes with the extensive use of only one public health insecticide or class of insecticides. A public health insecticide will not kill all (100%) of the target mosquitoes. Many experts believe when one public health insecticide is used repeatedly in the same location and against the same mosquito population, the surviving population may be more resistant to the insecticide than the original population. For example, this phenomenon has been observed among various mosquito populations throughout the U.S. with the wide-ranging use of several public health insecticides during recent decades. As part of the IMM strategy, we rotate different types of public health insecticides between mosquito seasons to minimize or prevent resistance.
NOTE: Adobe Acrobat Reader is required
IMPORTANT NOTICE: whenever you use an insecticide or insect repellent, you must read and follow the manufacturer's DIRECTIONS FOR USE as printed on the product label.