If you’ve noticed small piles of droppings or heard scratching sounds in your attic, you may have uninvited guests—bats. While bats play an important ecological role in controlling insect populations, having them roost in your home can lead to serious health concerns. One of the most dangerous and often overlooked risks is exposure to histoplasmosis, a respiratory disease linked to bat guano (droppings).
What Is Histoplasmosis?
Histoplasmosis is an infection caused by inhaling spores of the fungus Histoplasma capsulatum, which thrives in environments where bat or bird droppings accumulate. When bat guano dries and is disturbed—through cleaning, movement, or even airflow—the spores can become airborne. Inhaling them can lead to mild to severe respiratory symptoms, especially in individuals with weakened immune systems, the elderly, or young children.
Symptoms may include:
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Coughing
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Chest pain
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Fever
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Fatigue
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Shortness of breath
In some cases, the infection can become chronic or spread to other parts of the body, requiring medical treatment.
Why Bats Choose Attics
During summer in Green Bay, female bats often seek warm, dry places to give birth and raise their young. Attics provide an ideal environment: protected, quiet, and close to evening feeding grounds. Once inside, bats leave behind droppings that can build up quickly over time.
You may notice:
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A strong ammonia-like odor
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Small, dark pellet-shaped droppings
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Grease marks near entry points
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Squeaking or scratching noises at dusk or dawn
Why DIY Cleanup Is Dangerous
Attempting to remove bat guano without proper equipment is risky. Simply sweeping or vacuuming can release fungal spores into the air, increasing the risk of inhalation. Protective gear such as respirators, gloves, and HEPA-filter vacuums are essential—but even then, disturbing an active roost can lead to bites or the unintentional spread of bats throughout your home.
Additionally, in Wisconsin, bats are a protected species. Certain removal methods are illegal, especially during maternity season when young bats are flightless.
How Critter Control of Green Bay Can Help
At Critter Control of Green Bay, we specialize in humane and professional bat removal, attic cleanup, and guano remediation. Our trained technicians assess the infestation, safely remove the bats, and sanitize affected areas to reduce health risks. We also seal up entry points to prevent future infestations—all while following state and federal wildlife regulations.
Stay Safe, Stay Informed
If you suspect bats in your attic or see signs of droppings, don’t risk your health. Contact a licensed wildlife control expert to assess the situation. Fast action can prevent structural damage, protect your health, and ensure the safe removal of these important—but potentially hazardous—wild animals.
Need help with bats in your attic?
Contact Critter Control of Green Bay today for a free inspection and humane removal plan customized to your home.