Signs of a Bat Infestation in Homes

1. Guano

One of the most obvious signs of a bat infestation in homes is the presence of bat droppings, also known as guano. Bats tend to roost in attics, crawl spaces, and other secluded areas, leaving behind dark, pellet-like droppings. Guano may accumulate in piles or scattered throughout the infested area.

It is important to note that bat droppings can pose health risks, as they may contain harmful pathogens such as histoplasmosis. Therefore, it is crucial to avoid direct contact with guano and seek professional assistance for its removal.

2. Stains and Smudges

Bats have oily fur, which can leave stains and smudges on walls, ceilings, and other surfaces they frequently come into contact with. These stains are often dark in color and may appear near entry points, such as cracks or gaps in the structure.

If you notice unusual staining or smudging in your home, it could be a sign of bat activity. It is advisable to seek professional help in identifying the source and extent of the infestation.

3. Strange Noises

Bats are nocturnal creatures and are most active during the night. If you hear scratching, squeaking, or fluttering sounds coming from your walls, attic, or chimney, it could indicate the presence of bats in your home.

These noises are often more pronounced during dusk or dawn when bats are leaving or returning to their roosts. If you consistently hear unusual sounds, it is recommended to contact a wildlife control professional to investigate the situation further.

4. Sightings

Direct sightings of bats are an obvious sign of an infestation. If you frequently see bats flying in and around your property, especially during daylight hours, it is likely that they have established a roosting site within your home.

Keep in mind that bats are generally shy and prefer to roost in secluded areas. Therefore, if you notice bats flying inside your living spaces, it may be an indication that the infestation has grown significant and requires immediate attention from a professional.

5. Structural Damage

Bats can cause structural damage to homes over time. Due to their ability to squeeze through small openings, bats can enter your home through cracks, gaps, or damaged vents.

Once inside, they may chew on insulation, electrical wiring, and other building materials. This can lead to potential fire hazards or compromised insulation, resulting in increased energy costs.

If you notice signs of structural damage, such as chewed wires or insulation, it is crucial to address the issue promptly to prevent further damage and potential safety risks.


Identifying the signs of a bat infestation in homes is crucial for prompt action and ensuring the safety of your property and health. If you notice any of the signs mentioned above, it is strongly recommended to contact a professional wildlife control company with expertise in bat removal and exclusion.

Attempting to handle a bat infestation on your own can be dangerous and may not effectively resolve the issue. Professional wildlife control professionals have the necessary knowledge, experience, and equipment to safely and humanely remove bats from your home, as well as seal off entry points to prevent future infestations.