Insects such as moths can have devastating effects on crops and many farms use pesticides to control them. Sustainable farmers employ an ingenious alternative called insect pheromone disruption. Insects release sex hormones called pheromones during their mating cycle as location signals. Farmers confuse the insects by hanging pheromone-scented baits in their orchards or fields. When they are unable to find the opposite sex, the insects cannot reproduce. This is just another way ecological farmers avoid using toxins on their fields.