Serving the Denver Metro Area from Castle Rock to Boulder​

Signs You Might Have Bats

Staining:

• Discoloration at entry points
• No visible tracks or claw marks climbing to the entry

Droppings:

• Around the entry
• Ammonia or musky smell
• Shiny black
• Contain insect parts
• Small 1/8-1/4 inch

Sounds:

• High-pitched squeaking
• Scratching

Doesn’t match the signs you see? Return to Pests Page.

If you think you have a bat problem, please call or contact Animal & Pest Control Specialist, Inc., serving homes across the Front Range, including Denver, Evergreen, and Castle Rock.

Bats Nuisance Concerns:

• Guano (bat droppings) is a fertile ground for fungal diseases called “Histoplasmosis” and can be transferred to humans who breathe in the fungal spores
  • Histoplasmosis can be fatal
  • Caused by the fungus Histoplasma capsulatum
  • Symptoms include fever, anemia, and weight loss
• Bat bugs (commonly confused with—and related to–bed bugs) are usually found along with a colony.
• Known carriers of rabies and other diseases
  • Most rabies deaths in the US are associated with bats

Bat Removal:

• Can only be killed if creating a nuisance in dwellings
• Best technique: APCS will install “ONE WAY” bat doors so that they can get out but not back in
• Within a week, APCS will pull traps and seal the entry
• For reliable removal, check for more entries and seal them all
• Guano clean up services are offered

General Information about Bats:

• Nocturnal
• A single bat can eat up to 1,200 insects in an hour
• Use “Echolocation,” similar to sonar, to navigate around objects in the dark
• Usually have one litter a year consisting of 1-2 babies, typically in the late spring
• Only need a half inch or less of space to enter a house or building

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