Beauveria is a natural insect pathogen, infecting its host through direct contact. Once infected, a bed bug can infect other bed bugs. Aprehend® contains Beauveria’s microscopic spores, or conidia, which adhere to the insect’s cuticle and germinate, penetrating the insect’s blood system. The fungus then feeds on the insect’s blood, causing death within 3-7 days in bed bugs.