What kills 100% of bed bugs?

What kills 100 percent of bed bugs including adults, nymphs, and eggs is sustained high heat above 120 degrees Fahrenheit for an extended period, or a combination of professional methods, because no single chemical spray alone reliably kills 100 percent due to resistance and hiding ability. Professional whole-home heat treatment is considered the most effective method to kill 100 percent, where specialized heaters raise room temperatures to 135 to 145 degrees Fahrenheit and maintain it for several hours, with fans circulating hot air into cracks, mattresses, and furniture, which kills all life stages including eggs that are resistant to many insecticides. This method is often combined with residual insecticides and growth regulators applied to cracks and baseboards to kill any survivors. For small items, washing and drying on high heat above 120 degrees in a dryer for at least 30 minutes kills 100 percent on those items. Freezing at 0 degrees Fahrenheit for four days can also kill all stages. Diatomaceous earth can kill over time by dehydrating bugs but does not kill 100 percent quickly. Over-the-counter foggers rarely kill 100 percent because they do not penetrate hiding places and bed bugs have developed resistance to pyrethroids. To achieve 100 percent elimination, pest control professionals recommend integrated pest management including thorough vacuuming, encasing mattresses and box springs in bed bug-proof encasements for over a year to starve any trapped bugs, decluttering, and two to three follow-up visits to ensure no eggs hatch later. No DIY smell or natural oil alone kills 100 percent.