Pheromones are involved with the co-ordination of individuals in a population. Pheromones are employed by a large number of insects in bringing the sexes together for mating. These pheromones are known as sex attractants. They are widespread amongst Lepidoptera. In most cases the pheromone is produced by the female to attract the male. These sex attractants are often relatively specific. A lot of damage in orchards is caused by pests. Pheromones can be used in pheromone traps to identify the first flight of these insects. Infected areas can be treated with (chemical) pesticides. However, pheromones can also be used to control these pests by mating disruption. A pheromone based product – called RAK 3- against the codling moth (Cydia pomonella) ' has been officially approved by the Dutch Board for the Authorisation of Pesticides (CTB).