Is Bat Guano Dangerous? Pictures & Information
What’s In This Guide

While bat guano (poop) is a health hazard, it is also favored by gardeners as possibly the best fertilizer on the planet. Bat droppings and mice droppings can look very similar and many people are unsure as to whether they have bats or mice. Check out our quick guide on how to identify, remove, and even make use bat guano.
Identifying Bat Poop
Bat poop is shiny as bats feed on insects
The texture is dry and crumbly
Bat poop is often bigger than mouse poop
Bat poop is generally found higher up than mouse poop
Why Remove Bat Droppings?
The main issue with bat poop is that the fungus Histoplasma Capsulatum can grow and thrive on it. The respiratory disease Histoplasmosis can cause serious illness and, in extreme cases, even death in humans.
Bat droppings can cause a seriously bad odor as well as staining in your home.
Bats defecate up to 30 times a day and a buildup of bat poop can even cause the structural collapse of beams and ceilings.
The guano will also attract other pests, such as cockroaches which can lead to secondary infestations and potential disease.


What Diseases Can Bats Transmit? A Danger to People
| Updated for 2021What's In This Guide Diseases Associated with Bats What You Shouldn’t do if You Have a Bat Colony What Should You do if You Have a Bat Colony Returning Bats If you have noticed bats and bat droppings (bat...

Monarch Butterfly
| Updated for 2021What's In This Guide TaxonomyEggsCaterpillar ChrysalisButterflyMigration The monarch butterfly is the king of the insect world. Even though they are small creatures, they do phenomenal things. First...

Best Raccoon Traps And Cages
| Updated for 2021 Professional Humane Live Animal Trap Havahart 1089 Collapsible One-Door Live Animal Cage Trap Best Double Door—Havahart 1045 Live Animal Two-Door Duke DP Coon Trap Duke #110BT...
How to Clean Bat Guano
You should call in a professional, however, if there is an accumulation of guano due to the health risks. Histoplasmosis is contracted from breathing in airborne spores and a professional will use specialized apparatus during a clean up to prevent contamination.
The Benefits of Bat Poop

Bat guano is nutrient-rich and contains high levels of nitrogen, phosphorus, and potassium.
Gardeners attribute nitrogen to rapid green growth and find nitrogen a useful element in promoting lawn growth. Phosphorus is found to be helpful with flowers and trees whilst potassium may help plants develop hardy stems.
Please note: it is not safe to “harvest” bat poop from bats that may have entered your attic.