The application of larvicides to water-storage containers can help eliminate potential mosquito breeding sites. Insecticides, larvicides, rodenticides, Lethal ovitraps and repellents can be used to control vectors. They include ovicides and larvicides used against insect eggs and larvae, respectively. Larvicides are also used worldwide in mosquito abatement programs. Larvicides are used, along with larvae-eating fish and copepods, which reduce the number of larvae.