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===Volumetric heating===
 
===Volumetric heating===
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The most effective natural means of eliminating bedbugs involves pumping superheated air into an mildly pressurized (windows sealed) house, or heating individual room to around 140F> Temperature probes are used to ensure that internal temperatures are high enough to kill the bugs and their eggs. <ref>http://www.faqs.org/periodicals/201006/2054573271.html</ref>
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The most effective natural means of eliminating bedbugs involves pumping superheated air into an mildly pressurized (windows sealed) house, or heating individual room to around 140°F Temperature probes are used to ensure that internal temperatures are high enough to kill the bugs and their eggs.<ref>http://www.faqs.org/periodicals/201006/2054573271.html</ref>
    
One study concluded that it is important to achieve and maintain temperatures of above  118.4°F (48°C) for more than 20 min to effectively kill all life stages of bedbugs, considering the clutter in treated spaces and the fact that bedbugs move to cooler temperatures, treatment times must be much longer to penetrate cracks and crevices,  At 60-min exposure to 113°F , approximately 50% of adult bedbugs exposed survived, while 20% survived after 4 hours. Complete mortality was obtained at temperatures 118.4°F, 122°F, and 131°F for all exposure times except 10- min at 118.4°F.  Even if some nymphs emerged, they did not develop at temperatures higher than 118.4°F. No differences in mortality were shown between fed and unfed bedbugs.
 
One study concluded that it is important to achieve and maintain temperatures of above  118.4°F (48°C) for more than 20 min to effectively kill all life stages of bedbugs, considering the clutter in treated spaces and the fact that bedbugs move to cooler temperatures, treatment times must be much longer to penetrate cracks and crevices,  At 60-min exposure to 113°F , approximately 50% of adult bedbugs exposed survived, while 20% survived after 4 hours. Complete mortality was obtained at temperatures 118.4°F, 122°F, and 131°F for all exposure times except 10- min at 118.4°F.  Even if some nymphs emerged, they did not develop at temperatures higher than 118.4°F. No differences in mortality were shown between fed and unfed bedbugs.
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