A dryer works differently. It surrounds the load with heated air and keeps exposing the fabric to that heat. The U.S. Environmental Protection Agency advises placing dryer-safe items in a household dryer on high heat for 30 minutes to kill bed bugs and eggs. For a complete breakdown of the exact temperatures needed to kill bed bugs and their eggs, see our high-heat laundry guide with precise temperature thresholds. That is practical general guidance, but fabric care labels and machine performance still matter. Start timing only after the dryer is producing heat, and avoid packing the drum so tightly that air cannot circulate.