Changes

In the 1930s there were large sections of London where every house was infested, resulting in an investigation by the Ministry of Health and the Public Health Act of 1936 which required councils to take action. Toxic fumigation using sulfur dioxide (sulfur candles) or hydrogen cyanide, are reported to have helped reduce infestations by up to 80% in one town under study.  Before [[World War Two]] the primary treatment was either heat or fumigation, and barriers behind walls were even constructed to prevent bedbugs from crawling up, while harborage was encouraged using wire mesh below, which periodically would be burned with a blow torch. Some state laws once required that the furniture be tagged as fumigated before it could be resold. DDT became the primary insecticide beginning in 1945, and declining numbers overall continued from the late 30s through 1980s until the recent resurgence.

In the 1930s there were large sections of London where every house was infested, resulting in an investigation by the Ministry of Health and the Public Health Act of 1936 which required councils to take action. Toxic fumigation using sulfur dioxide (sulfur candles) or hydrogen cyanide, are reported to have helped reduce infestations by up to 80% in one town under study.  Before [[World War Two]] the primary treatment was either heat or fumigation, and barriers behind walls were even constructed to prevent bedbugs from crawling up, while harborage was encouraged using wire mesh below, which periodically would be burned with a blow torch. Some state laws once required that the furniture be tagged as fumigated before it could be resold. DDT became the primary insecticide beginning in 1945, and declining numbers overall continued from the late 30s through 1980s until the recent resurgence.

Diligence and use of the pesticide DDT in the 1950s and broadbased pesticides also resulted in a dramatic reduction of bedbugs overall in the United States, though significant reservoirs of bed bug infestation persisted

Diligence and use of the pesticide DDT in the 1950s and broad-based pesticides also resulted in a dramatic reduction of bedbugs overall in the United States, though significant reservoirs of bed bug infestation persisted

through this period, particularly in inner-city areas.  During the bed bug recession period of the 1950s, infestations were

through this period, particularly in inner-city areas.  During the bed bug recession period of the 1950s, infestations were

mainly found in homeless shelters, and prisons, while during in the period 1967-73, about 61% of infestations were found in domestic residential property, while about 25% were in institutional setting.s<ref> [http://www.google.com/url?sa=t&source=web&cd=15&ved=0CI8BEBYwDg&url=http%3A%2F%2Fwww.icup.org.uk%2Freports%255CICUP911.pdf&ei=_7fkTMOcM4X7lwfpgvC1Cw&usg=AFQjCNHAv-kTckL-i94tT9QVwttxl-L2YQ&sig2=nWe_LzSDoRelL73t_I6ljg  ''Bed bugs (Hemiptera: Cimicidae): An evidence-based analysis of the current situation,'' Proceedings of the Sixth International Conference on Urban Pests], p. 9, 2008</ref><ref>[http://www.birc.org/MarApril2007.pdf ''Bed Bugs bounce back'', IPM Practitioner], March/April 2007</ref><ref>>http://www.faqs.org/periodicals/201006/2054573271.html</ref>  

mainly found in homeless shelters, and prisons, while during in the period 1967-73, about 61% of infestations were found in domestic residential property, while about 25% were in institutional settings.<ref> [http://www.google.com/url?sa=t&source=web&cd=15&ved=0CI8BEBYwDg&url=http%3A%2F%2Fwww.icup.org.uk%2Freports%255CICUP911.pdf&ei=_7fkTMOcM4X7lwfpgvC1Cw&usg=AFQjCNHAv-kTckL-i94tT9QVwttxl-L2YQ&sig2=nWe_LzSDoRelL73t_I6ljg  ''Bed bugs (Hemiptera: Cimicidae): An evidence-based analysis of the current situation,'' Proceedings of the Sixth International Conference on Urban Pests], p. 9, 2008</ref><ref>[http://www.birc.org/MarApril2007.pdf ''Bed Bugs bounce back'', IPM Practitioner], March/April 2007</ref><ref>>http://www.faqs.org/periodicals/201006/2054573271.html</ref>  

The current resurgence of bedbug infestations appears to have started almost synchronously in the late 1990’s in Europe, the United States, and in Australia. 2007 data from a survey of pest control companies in the latter country indicated a 4500% increase over a seven year period.<ref>''Bed bugs (Hemiptera: Cimicidae): An evidence-based analysis of the current situation,'' Proceedings of the Sixth International Conference on Urban Pests, p. 1, 2008</ref><ref>Doggett S.L. and R.C. Russel, ''Bed bugs: Recent Trends and developments,'' Australian </ref>  

The current resurgence of bedbug infestations appears to have started almost synchronously in the late 1990’s in Europe, the United States, and in Australia. 2007 data from a survey of pest control companies in the latter country indicated a 4500% increase over a seven year period.<ref>''Bed bugs (Hemiptera: Cimicidae): An evidence-based analysis of the current situation,'' Proceedings of the Sixth International Conference on Urban Pests, p. 1, 2008</ref><ref>Doggett S.L. and R.C. Russel, ''Bed bugs: Recent Trends and developments,'' Australian </ref>