Species Identification

The most common bats in southern B.C. are the little brown bat and the large brown bat, two of the 16 species found in the province. All bats are protected by the provincial Wildlife Act as they are one of the most beneficial animals. A single brown bat can capture 600 mosquitoes an hour, a colony of 500 bats, a million insects a night.

Bats found in buildings are usually there as a temporary daytime roosting site, a nursery to rear their young or as a hibernation site. Bats are nocturnal and will not leave a roosting site if there is bright light. Bats are mammals and can carry diseases and parasites the same as other mammals and in rare cases, rabies. In reality, people are more likely to contract rabies from their family pets than from bats. The biggest area of concern, however, is the accumulation of droppings and urine in the areas where the roost is located, specifically if the roost is in a residential attic.


Risk Management

Bats can be beneficial, as they will eliminate a great number of mosquitoes around the immediate area where they are nesting (usually an attic). The danger lies in physical contact.

Rabies is the #1 concern with bats. It is a virus that is spread by the saliva of infected animals that are in the last stages of the disease. Usually it is passed on through a bite.

Bats roosting can build up substantial amounts of guano (Bat Droppings). This can be a source of histoplasmosis which is a fungal infection that can have serious implications especially for those with weakened  immune systems.



If you suspect that you have a roosting site you can observe the exterior at twilight. Bats will leave the roost to hunt just before dark and return just before dawn. Usually and hours observing time is enough to confirm a roosting site.

Because of the regulations in place to protect bats, homeowners should not attempt to deal with a bat problem on their own but should instead call Allpro Pest Control.


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