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Bat Poop vs. Mouse Poop: How to Tell the Difference

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Learn how to identify bat and mouse droppings.

Learn how to identify bat and mouse droppings.

If you are trying to identify mouse poop vs. bat poop, there are some key differences that can help you tell them apart. That said, it is difficult at first to actually tell them apart; they are roughly the same size and color (they tend to be black). To tell them apart, you don't want to be squeamish here as you're going to have to go and inspect them.

Here are the best two methods to tell the difference between the two droppings:

1. Inspect the Droppings for Consistency

One of the best things to do is crush up the droppings. See, although their poops look similar, what they eat is very different. Bats will eat insects, while mice will eat seeds. This difference in the diet means that when you crush up the dropping of a bat, it should have a more powdery consistency, while mouse droppings will be more granular and will squelch (especially when fresh), often described like playdough.

2. Scour the Droppings Area

Try to identify dropping patterns as well. Where bats are clustered in piles, mice tend to have them throughout an area in small groups or even alone. And finally, if all else fails, you can always try to identify the creature itself! Although they're both nocturnal animals, bats are much more adept at flying than mice are at climbing, so that should help you out. That said, you're unlikely to catch them in the act.

Unfortunately, the above two methods are probably the best way to identify bat poop vs. mouse poop. When it comes to trying to identify the droppings themselves, it's difficult to draw too many conclusions from them as the animal itself could be young, large, male and female then there is the diet as well.

Characteristics of Bat Droppings

  • Shapeless with smooth sides with blunted ends
  • Black in color
  • Powdery when crushed up
  • Up to a half inch

Characteristics of Mouse Droppings

  • More tubular in shape with ridges on the sides and pointed ends.
  • Black in color
  • Granular and will squelch when fresh

Examine Around the Droppings for Clues

Look for additional clues to identify whether it is a mouse or a bat. If, for instance, you can find rodent hair nearby, it will add support to the idea that a mouse was present.

However, if you find an accumulation of droppings and no other evidence of a mouse, it’s possible that a bat roosts in the area. If you have access to the ceiling void or other likely locations where bats might roost and can’t see any droppings, it’s likely that a mouse is the culprit.

  • Check for piles of droppings. Mice tend to poop in small groups or even alone, while bats deposit their waste in large clusters.
  • Inspect the contents of the droppings. Bats eat insects, so their feces will be composed of fine powder as well as insect parts potentially including wings. Mouse droppings, on the other hand, will be mostly seeds with a softer, squishier consistency.
  • Look for footprints. Bats have clawed feet that leave small indentations, while mice have five-toed paws that leave prints that look like a capital “E” when they walk.
  • Look up. If the droppings are on a high surface, such as a ceiling beam, they were likely left by a bat. Mice are better at climbing than flying and prefer to stay closer to the ground.

Bring in a Pest Control Professional

If you need help identifying whether the droppings are from a mouse or a bat, or if you have either of these animals in your home, contact a pest control professional. Many companies that provide mouse control services also deal with bats.

They will likely be able to identify the droppings and tell you what kind of animal is responsible. They can also help you find and remove the animals from your home.

You will want to try and deal with this issue as soon as possible, as both mice and bats can carry diseases and cause health implications. They can also can even potentially cause structural damage to your home.

What to Look for in a Good Pest Control Professional

Now that you know you need to get a pest control expert, you need to carry out your research to make sure you get a company that will do a good job. So you need to make sure they do a few things here:

  • Look for a company that is experienced in dealing with both mice and bats
  • Check that they have a good reputation and reviews from other customers (even better if your friends can recommend someone).
  • Make sure they offer a guarantee on their work
  • Get quotes from several companies to compare pricing
  • Find out what kind of methods they use to get rid of the pests. You may want to make sure they don’t use any harmful chemicals if you have children or pets in the house.
  • Ask them about prevention and what you can do to stop this from happening again in the future, and it's even better if they can offer a guarantee.

Have them explain the process they will use to get rid of the pests and make sure you are happy with it. From there, you can sit back and relax, knowing that the problem is being taken care of by experts.

Carrying out these steps will help to make sure you find a good quality pest control professional that can help you get rid of your pest problem.


This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

© 2022 Elin Beck