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Bed bugs in Toronto: A 19th century pest re-emerges in the 21st century

18.12.2003


Image: Tim Myles


Bed bug feces on seam of mattress
Image: Tim Myles


Resurgence may be due to greater resistance to pesticides, socioeconomic conditions

"Bed bugs were once a common urban plague. But with the development of synthetic insecticides such as DDT and spray systems during the Second World War, they were largely eliminated," says Dr. Tim Myles, an urban entomologist and author of the study published U of T’s Centre for Urban and Community Studies in a recent research bulletin.

Reports of bed bugs by Toronto pest control companies and pest control officials started to increase two years ago.



In 2002, homeless people told street nurses that bed bugs were a priority medical issue. This year, at least a dozen shelters, hostels, and other forms of public housing had ongoing problems with bed bugs, despite spraying by pest control companies. "The situation merits attentive monitoring. At present, it is not clear to what extent, if at all, such monitoring is currently in place in the Toronto Public Health system," he says.

What is causing this new resurgence? At present, experts can only speculate that the following factors may be playing a role:
  • changes in registered pesticides, use patterns, residual levels, and pesticide resistance;

  • socioeconomic conditions leading to increased levels of homeless people living under conditions in which it is difficult to maintain hygiene;

  • a populace that has forgotten how to monitor for and control bed bugs;

  • greater mobility that allows bed bugs to spread more quickly to a wide number of establishments, including hostels, shelters, dormitories, prisons, hospitals, and hotels.

What can be done to eliminate bed bugs? The research bulletin not only mentions commercial pesticides, but also encourages greater awareness, early reporting, monitoring, cleaning efforts by rooming house and hostel residents, and Integrated Pest Management. Non-chemical approaches include thorough searching and mechanical destruction of bugs and eggs, along with laundering of bedding, frequent vacuuming, and brushing mattress seams. The bulletin also describes the effectiveness of sticky traps and even simple carpet tape, which, placed around a bed or bed legs can trap the bugs.

CONTACT:

Dr. Tim Myles, Centre for Urban and Community Studies, ph: (416) 978-5755; email: t.myles@utoronto.ca

U of T Public Affairs, ph: (416) 978-8638; email: news.events@utoronto.ca

Tim Myles | University of Toronto
Further information:
http://www.newsandevents.utoronto.ca/bin5/031216a.asp

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