There are several ways to identify if there are bats in your attic. One common sign is the presence of bat droppings, known as guano. These droppings are typically dark in color and have a shiny appearance due to the undigested insect exoskeletons they contain. Another indication is the strong, musty odor that bats emit. If you notice a pungent smell in your attic, it could be a sign of bat infestation. Additionally, bats often leave behind oily smudges or stains on surfaces where they frequently enter or exit, such as cracks, gaps, or vents. Lastly, if you hear scratching or squeaking sounds coming from your attic during dusk or dawn, it is highly likely that bats have taken up residence.

Signs of Bats in Your Attic: A Guide for Homeowners


As a homeowner, it’s crucial to be aware of any potential wildlife intrusions in your property. Bats, for instance, are known to seek shelter in attics, posing various risks to both your home and health. Identifying these nocturnal creatures in your attic is the first step towards addressing the issue effectively. In this article, we will explore some telltale signs that can help you determine if there are bats in your attic.

1. Unusual Noises

One of the most apparent signs of bats residing in your attic is the presence of unusual noises. Bats are active at night, so listen carefully during dusk or dawn to identify any squeaking, scratching, or fluttering sounds coming from above. These sounds may indicate bat activity within your attic space.

2. Foul Odors

Bats produce a distinct odor due to their droppings (guano) and urine accumulation. If you notice a strong and unpleasant smell in your attic, it might be a clear indication of bat infestation. The odor can become more noticeable as the colony grows and their droppings accumulate over time.

3. Guano Accumulation

Bats tend to roost in large numbers, resulting in significant guano accumulation in your attic. Look for dark droppings that resemble mouse droppings but have a shiny appearance due to insect exoskeletons present in their diet. Bat guano can often be found in piles or scattered across the attic floor.

4. Stains and Grease Marks

Bats have oily fur that leaves behind stains and grease marks on surfaces they frequently come into contact with. Check for these marks on attic walls, beams, insulation, or other structural components. These stains may appear as dark smudges or streaks and can be a clear indication of bat activity.

5. Entry Points

Inspect your attic for potential entry points bats might use to access your home. Bats can squeeze through small gaps and cracks, so pay close attention to areas around vents, chimneys, loose shingles, or damaged fascia boards. Look for signs of bat guano or nesting materials near these entry points.

6. Sightings

If you’re lucky, you may spot the bats themselves. However, since bats are nocturnal and prefer dark, secluded spaces, sightings can be rare. If you do see bats flying around your property during twilight hours, it’s a strong indication that they have taken up residence in your attic.

7. Professional Inspection

While the aforementioned signs can help you identify a bat infestation, it’s always recommended to seek professional assistance for a thorough inspection. Wildlife control operators have the knowledge and experience to accurately identify bat activity, locate their entry points, and provide appropriate solutions tailored to your situation.


Identifying the presence of bats in your attic is crucial for prompt action and ensuring the safety of your home. By paying attention to unusual noises, foul odors, guano accumulation, stains and grease marks, potential entry points, and even sightings, you can determine if bats have made your attic their home. Remember to consult a professional wildlife control operator to address the issue effectively and responsibly.

The Critter Squad Inc. – Your Trusted Wildlife Control Experts

Are you facing a wildlife nuisance that requires immediate attention? Look no further than The Critter Squad Inc. for all your wildlife control and animal removal needs. Our team of experienced professionals is dedicated to providing efficient and humane solutions to deal with unwanted critters on your property. Whether you’re dealing with raccoons, squirrels, bats, or any other wildlife intruders, we have the expertise to handle the situation effectively. With our state-of-the-art equipment and extensive knowledge of animal behavior, we can safely remove these creatures from your premises without causing harm to them or your property. To avail our services, simply give us a call at (713) 396-6030, and our friendly staff will be ready to assist you. Trust The Critter Squad Inc. to restore peace and safety to your home or business.