Used for trapping male adult fruit flies (especially Bactrocera dorsalis) in fruit tree crops like mango, guava, banana, papaya, plum, peaches and several others. The fruit fly's life cycle begins when the female lays her eggs on a piece of fermenting fruit or other decaying, sweet organic material. She can lay up to 500 eggs, making it difficult to control the population. After eggs hatch into small, white larvae, they eat from their nesting site for four days, absorbing the nutrients and energy needed to transform into adults. Larvae then locate dark, dry places for pupation.