Bed Bugs Middlesex-London Health Unit

Bed bugs are small biting insects that multiply quickly. Bed bugs range in size from approximately 1.5 mm to 10 mm long. They are tiny, oval-shaped insects that do not have wings, and may have an appearance similar to an apple seed. Bed bugs typically bite at night, and often bite around a persons face, neck, upper torso, arms, and hands.View the fact sheet below or this web page for more information on bed bugs.

At this time, there have been no known cases of bed bugs spreading disease to humans. Although bed bugs do not affect physical health, having bed bugs can be a source of stress and impact mental health and wellness.

Bed bugs feed on human blood, and usually bite the face, neck, body, or arms. Although bed bugs are not known to transmit any disease, they may leave small red bite marks, often lasting 3-4 days. Bed bugs can typically be found in the following areas:

Take the following steps:

Queens Printer for Ontario, 2011

Queens Printer for Ontario, 2011

Take the following steps:

Take the following steps:

The Middlesex-London Health Unit works with the City of London to follow up bed bug infestations in rental units. The City of London Property Standards By-law CP-16 (PDF 191KB) says that all buildings must be kept free from pests,1 and this is supported through by-law enforcement. However, the Health Unit can play an important role in the first stages of a bed bug infestation. When a bed bug infestation is discovered, the Health Unit can work with a tenant and landlord to fix the problem before enforcement by the City of London is needed.In Middlesex County, residents should contact their municipal office to inquire about local by-laws.

To speak to a Public Health Inspector on the Environmental Health Team about bed bugs, to request information in other languages, or to ask for help with a bed bug infestation, please call:

Date of creation: January 4, 2013Last modified on: October 10, 2017

2Government of Ontario. (2011, March). Bed bugs fact sheet. Toronto, ON: Queens Printer for Ontario.

3Government of Ontario. (2011, March). Myths. Toronto, ON: Queens Printer for Ontario.

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Bed Bugs Middlesex-London Health Unit