How to Tell Bat Poop 
From Mouse Poop: Video 

Key Differences: Size, Shape, and Texture

Bat Poop (Guano)

• Size & Shape: Bat feces is around the size of a grain of rice, but it can be a bit longer. Often slightly wider or more elongated than mouse droppings. The ends can be somewhat blunt.
• Texture: Guano crumbles easily into tiny bits. Plus, you’ll see shiny bits of undigested insect parts, a telltale sign that these pellets came from an insect-eating bat.
• Location: You'll usually find bat droppings in large piles beneath roosting areas, such as in attics or behind shutters. Plus, bats roost in close proximity, often on top of each other. As a result, their droppings are concentrated in a few locations.

Mouse Poop

• Size & Shape: Mouse pellets are bout a quarter-inch long, also resembling a grain of rice but often narrower. Ends tend to be pointed or tapered.
• Texture: More solid and less likely to crumble into tiny fragments. Older droppings become harder and darker.
• Location: Mouse droppings are often scattered along baseboards, in cabinets, or near food sources. You might see a “trail” of pellets where mice frequently travel. Plus, they love the insulation in crawl spaces and attics.

Tip: If you’re brave enough to inspect the animal droppings closely, put on gloves and gently crush one. If you see shiny insect parts, you’re almost certainly dealing with a bat problem.

Additional Signs of Infestation

Signs of a Bat Infestation

• Nocturnal Activity: Bats are active at night, so you might notice them exiting your home at dusk.
• Chirping or Squeaking Sounds: High-pitched noises from the attic or walls can signify roosting bats.
• Stains Around Entry Points: Look for dark streaks or discoloration on walls or around vents where bats squeeze through tight openings.
• Unpleasant Odor: Bat urine and droppings have a distinct and unpleasant odor.

Signs of a Mouse Infestation

• Gnaw Marks: Mice love to chew on almost anything, from food packaging to electrical wiring.
• Nests: Torn paper, shredded fabric, or fluffy insulation are common nesting materials for mice.
• Scampering Sounds: You may hear tiny feet scurrying in walls or above ceilings, especially at night.

 Tip: Observing both droppings and these additional indicators helps you confirm which pest you’re dealing with before taking further steps.

Bat and Mouse Health Hazards

Both bats and mice come with their own set of potential health risks:

• Bats: Along with the risk of rabies if a bat bites or scratches you, bat guano can harbor spores that cause histoplasmosis. Symptoms may include fever, coughing, and fatigue.
• Mice: Mouse droppings and urine can spread hantavirus, which can lead to serious respiratory issues. Mice also carry fleas, ticks, and lice, and harmful bacteria which may transmit other diseases.

Tip: Always wear protective gear—gloves, masks, and goggles—when cleaning up droppings. This simple step reduces your risk of inhaling or coming into direct contact with harmful pathogens.

Cleaning Up Droppings Safely

1. Gather the Right Supplies

• Protective gloves
• N95 or similar-grade mask
• Goggles or safety glasses
• Disinfectant solution (bleach or commercial cleaner)
• Sealable plastic bags
• Hazmat suits

2. Ventilate the Area

If possible, open windows or set up fans to circulate fresh air. Good ventilation helps disperse potential airborne particles.

3. Soak and Scoop

Lightly spray the droppings with a disinfectant solution to reduce dust before cleaning. Use paper towels or a disposable scoop to remove droppings, then place them into a sealed bag.

4. Dispose Responsibly

Place all contaminated paper towels, gloves, and any other materials into another sealed bag, then discard in an outdoor trash bin. Thoroughly wash your hands and disinfect all tools once you’re done.

Tip: Take your time when cleaning to avoid stirring up dust. Rushing can lead to airborne particles that put your health at risk.

Prevention: Keeping Bats and Mice Out

Bat-Proofing

• Seal Cracks and Crevices: Bats can squeeze through incredibly tiny openings. Inspect and seal all gaps around roof lines, chimneys, and vents.
• Install Bat Houses: If bats frequently visit your property, consider installing a bat house away from your residence. This gives them a safe roosting spot and keeps them out of your attic.

Mouse-Proofing

• Store Food Properly: Keep all grains, pet food, and pantry items in airtight containers. Half the battle is eliminating their food source.
• Eliminate Clutter: Mice thrive in messy areas, so clear out any piles of cardboard, paper, or debris that make perfect nesting material.
• Block Entry Points: Mice can slip through holes the size of a dime. Inspect your foundation, walls, and doors for gaps or cracks and seal them promptly.

Tip: Regular maintenance is your best defense. A quick annual inspection can help spot potential entry points before pests move in.

When to Hire Professional Help

While a single dropping or single mouse here or there may not signal a significant infestation, repeated sightings or large piles are a red flag. Here are some situations where it’s best to consult an expert pest control service:

1. Large or Ongoing Infestations: If you’re overwhelmed by the amount of droppings or notice damage beyond a minor level, a professional can help assess and control the problem. Plus, bat removal is complicated and requires a specialist.
2. Wildlife Protection Laws: Bats are often protected by state and federal laws. A licensed wildlife removal specialist can remove them safely without harming the animals or breaking regulations.
3. Persistent Pests: If you’ve sealed every possible entry point and cleaned thoroughly but still find fresh droppings, you may need more advanced methods that a professional can provide.
4. Health Concerns: If anyone in your household is immune-compromised or experiencing health issues that might be related to exposure, it’s crucial to involve a trained professional.

Tip: Don’t wait until the infestation has spiraled out of control—early intervention often leads to quicker, safer resolution.

Final Thoughts

Discerning the difference between bat poop and mouse poop might feel a bit icky, but it’s a vital first step in protecting your family and your home. By focusing on the droppings' size, shape, texture, and location, you’ll quickly get a good idea of which animal is sneaking around. From there, you can decide on the right cleanup strategy and whether you need professional assistance.

Remember, prevention and early detection are key. So, watch for any unusual pellets, sounds, or smells, and don’t be afraid to reach out to an expert when necessary. With the proper knowledge and a proactive approach, you’ll keep your home pest-free and peace of mind intact.