What is a Desjardins flat beetle

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Desjardins Flat Beetle

What are Desjardins flat beetles?

Desjardins flat beetle, also known as the False powderpost beetle, is a common pest that infests hardwoods, softwoods, and bamboo. These pests can cause significant damage to wooden structures, furniture, and flooring, which can be costly to repair.

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A close up of a bug on a leaf Description automatically generated Desjardins flat beetle is a small beetle that ranges in size from 2-5mm. They are often mistaken for cockroaches or water bugs and can be a nuisance. Although they do not bite or sting, they can cause allergic reactions in some people.

They are:

  • R-brown to black in colour
  • Have a flattened elongated body
  • Distinct ridges along their wings.
  • Adults are attracted to light and can be found flying around windows or light fixtures. Larvae are cream-colored with a brown head.
  • These pests and are attracted to damp areas and can be found near sources of water, such as sinks, toilets, and showers.




Control measures:

A house with a magnifying glass Description automatically generatedInspect for infestation: Regular inspection for signs of infestation, such as small holes in wood, sawdust or frass around wood, or dead beetles, can help detect an infestation early and prevent further damage.

Remove infested wood: Infested wood should be removed and replaced with new, untreated wood. This can prevent the spread of the infestation to other areas of the structure.

Reduce moisture: Desjardins flat beetles thrive in moist environments, so reducing moisture levels in the building can help prevent infestations. This can be done through proper ventilation and dehumidification.

Apply insecticide: Insecticide treatments can be effective in controlling Desjardins flat beetle populations. However, it is important to work with a licensed pest control professional to ensure the proper application of the product and to choose the most effective treatment for the specific situation.

Seal cracks and crevices: Desjardins flat beetles can enter through cracks and crevices in the building, so sealing these areas can prevent their entry.

Prevention and early detection are key to controlling Desjardins flat beetles. Regular inspection, moisture reduction, removal of infested wood, and the application of insecticides can help prevent and control infestations. It is important to work with a licensed pest control professional to determine the most effective treatment plan for the specific situation.

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