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Insect Information
Household Pests - Bed Bugs

What are Bed Bugs?
What do Bed Bugs feed on?
How can Bed Bugs get into my dwelling?
What would be considered evidence of bed bug activity if there are no eggs, nymphs or adults present?
What do Bed Bug bites look like?
How can I control Bed Bugs?
How can I prevent Bed Bugs from entering my residence?

Bed Bug nymph

Bed Bug Nymph with Bloodmeal

Adult Bed Bug Feeding

Adult Bed Bug Feeding

What are Bed Bugs? 

Bed Bugs are "true bugs" that take blood meals from humans, but will feed on birds and other mammals.  Generally Bed Bugs feed at night and hide during the day, usually near where a person may sleep or rest for long periods of time. The human Beg Bug or Cimex lectularius is the most commonly found species in homes, hotels, apartment buildings etc. and can be found almost anywhere people inhabit. Bed Bug complaints and calls for information have been on the rise since the late 90's and are expected to increase as these insects are proliferating and disseminating at a rapid rate. 

Adult Bed Bugs are large enough to see with the naked eye. They have oval-shaped bodies (5-6 mm long), a short broad head and no wings. Despite having no wings, they can crawl quickly over floors, walls and ceilings. Bed Bugs can not jump or fly. Prior to feeding, they are flat; however, after feeding with their piercing sucking type mouthparts, they turn dark red and appear bloated.

A female is capable of laying several hundred eggs, over her lifetime, depending on temperature and food sources.  The eggs are whitish in color and about 1 mm in size.  Eggs are usually found in small clusters in cracks and crevices. Their eggs are laid using a very sticky glue like adhesive to a site and are very hard to remove by hand. The eggs hatch in about 7 to 14 days depending on environmental conditions.  The nymphal stage, which looks like a small adult, are the immature stage of the Bed Bug, and they need to start to feed immediately. They molt 5 times each stage can last up to 30 days.  The entire life cycle from the first instar/nymph to adult is typically 4 to 9 weeks, dependent of environmental conditions.

Bed Bug Lifecycle

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 What do Bed Bugs feed on? 

Bed Bugs prefer to feed on human blood, but will feed on other mammals and birds if humans are not present.  They usually bite at night when the human host is sleeping. The bites are painless and often the bites will occur around the face, neck, arms, hands and upper torso. Bed Bugs are very resilient.  Research has shown that they can survive up to 18 months without feeding, depending on the environment they are in. 

Bed Bugs have never demonstrated that they are capable of transmitting any human diseases.  Most people are not aware that they have been bitten.  However, some people are more sensitive to the bite and can have localized allergic reactions, often developing an inflamed spot. Often, a series of two to three welts are produced in close proximity are present following feeding by Bed Bugs.

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How can Bed Bugs get into my dwelling? 

Bed Bugs are often transported into a dwelling on or in items such as used or discarded box springs, clothing, furniture, purses and luggage. Hotels, apartments, hostels, shelters or any other multi-unit dwelling are at risk. Most infestations start around beds and spread throughout a room and beyond. Bed Bugs are often found in the following areas (this not inclusive of all the possible areas that Bed Bugs can be present):

Bed Bugs in a couch

Bed Bugs under table

  • the seams and creases of mattresses and box springs
  • under couches, chairs and beds
  • between the cushions of couches and chairs
  • behind loose wall paper, paintings and posters
  • behind baseboards and door casings
  • in drawers
  • under area rugs and edges of carpets
  • between curtain folds
  • cracks in plaster
  • cracks in bed frames
  • telephones, radios, clocks or other electronic device
  • this list is not inclusive; an intense search of all areas of a room and home must be done

Bed Bugs can also travel (migrate) from room to room or apartment to apartment by moving along electrical wiring, pipes and other conduits if there is no food source present.
Adult Bed Bugs can survive without a blood meal for approximately 12 - 18 months depedent on environmental conditions. So if a room or home is vacated, it does not mean that the Bed Bug problem has been resolved due to their migration or by entering a hibernation like state until a host returns.

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Bed Bug evidence on mattress

Bed Bug bites


What would be considered evidence of bed bug activity if  there are no eggs, nymphs or adults present?

If you suspect you may have Bed Bugs, inspect all the folds and crevices of mattresses and bed frames where Bed Bugs like to hide. You can monitor Bed Bug activity using double-sided sticky tape or glueboards and inspecting them daily. Bed Bugs leave dark reddish brown fecal matter in the areas where they have fed or their waste material during post feeding. If you are seeing these spots it may be an indicator of bed bug activity or a potential for Bed Bugs being present. As well discarded nymph casings and dark blackish fecal matter may also be present.

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What do Bed Bug bites look like?

When Bed Bugs feed, they inject their beak into the skin and their saliva acts as an anticoagulant to bring up the bloodmeal. Although individual responses vary, the common reaction is for the skin to become red, inflammed and irritated. Often the skin lesions are unnoticed or mistaken for flea or mosquito bites or other skin conditons. Rashes range from localized red and itchty spots arranged in a linear fashion. Some people may develop welts or a lump filled with fluid or blood. Bites occur on exposed areas of the skin, such as face, neck, hands, arms, legs or all over the body.

Most Bed Bug bites will go away without treatment. If bitten, keep the the skin clean and avoid scratching. If bites are really itchy a doctor may prescribe cream, antihistamines or antibiotics if the skin has become infected from scratching.

Bed Bug bites Bed Bug bites Bed Bug bites

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How can I control Bed Bugs?

Bed Bugs are difficult to control and require an Integrated Pest Management (IPM) program approach to suppress them. An IPM program combines various control techniques and products to minimize the risks to human health and environment.

 

Bed Bugs along mattress seam

Bed Bugs along mattress seams

There are non-chemical and chemical options for treating Bed Bug infestations.

Some Non-chemical ways to treat Bed Bugs include:

  • Place dry clothes into the dryer on high heat for 15-20 minutes. This will effectively kill all stages, including the egg stage, without damaging the clothing.
  • Alternatively, wash bedding and clothing in hot water (120oF) and laundry detergent.
  • Use hot steam along baseboards, wallpaper, cracks or other areas where Bed Bugs and eggs can hide. Remember, if they can get into a space, they are likley there.
  • Vacuum often with strong suction all possible places with Bed Bugs including the mattress, box spring, and bed. Scraping of the egg masses has to occur to remove them. Vacuum daily and empty vacuum immeadiately.
  • Use a scrub brush to remove Bed Bugs and eggs from the seams of mattresses.
  • Stuffed toys can be put in the clothes dryer for 15 to 20 minutes on high heat.
  • Remove the infested material and treat with a properly registered pesticide or hire an exterminator to treat your location (please see chemical treatment section below). If feasible and practicable destroy furniture, beds or bed frames that are suspected of having Bed Bugs. If possible treat the infested materials with heat above 124oF or 51oC.
  • Do not bring materials into a new location from a location where Bed Bugs may have been present or are a current issue. Bed Bugs are easily and commonly transported from location to location on infested materials. This includes literally any item that may have potential hiding spots.
  • Treating materials that are infested with Bed Bugs by using cold temperatures (below 0o) is NOT an effective method for control.

Chemical ways to treat Bed Bugs include:

  • Domestic formulations of spray, liquid, and dust products such as permethrin, pyrethrins and diatomaceous earth, are available at retail stores. It is very important to ensure the products used are specifically registered for Bed Bugs. Directions for use of chemical products should be followed carefully. Do not chemically spray linens and mattresses unless they are registered for this use. 

Pest control professionals:

  • For larger infestations, or for infestations in multi-unit buildings, pest control professionals should be called. Building owners should check municipal bylaws before trying to treat infestations on their own.
  • Pest control companies often use a variety of chemical insecticides. More than one application will likely be necessary.
  • You can find pest control companies in your Yellow Pages

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How can I prevent Bed Bugs from entering my residence?

Bed Bugs are on the increase and are being found just about everywhere. For large infestations, or for infestations in multi-unit buildings, pest control professionals should be called. Building owners should check municipal bylaws before trying to treat infestations on their own. To prevent a possible transfer of Bed Bugs to your residence a few tips are provided (this list is not all inclusive): 

  • When travelling take precautions by inspecting the room and furniture for bed bugs or signs of bed bugs. Protect your luggage by enclosing it in a plastice bag.
  • Vacuum suitcases after returning from a vacation and put dry clothes into the dryer on hot for 15-20 minutes. Put used vacuum bags into a sealed plastic bag and dispose of them immeadiately.
  • Be cautious when acquiring secondhand beds, bedding and furniture.
  • Repair cracks in plaster and glue down loosened wallpaper. Use caulking along basboards and for any openings that a bed bug may use to travel from dwelling to dwelling.
  • Remove and destroy wild animal roosts and bird nest when possible if located within the home, if Bat Bugs are identified.
  • Check furniture and bedding regularly and keep normal cleaning and sanitation practices.  

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Last update: 01/19/2010