Bat Guano Identification
Discovering guano is one of the best ways to identify bat activity. It is easy to differentiate from other animal droppings, as long as you know what you are looking for. Guano is commonly used in fertilizers as it is exceedingly high in phosphorus and nitrogen content. The guano itself is shaped like pellets, but will often become dust when touched. However, the guano of bats is well-known for carrying the histoplasmosis fungus, which can become airborne and cause respiratory issues. Which is why you should always use protective gloves and face masks when coming into contact with guano.
The guano also has a very distinctive odor, which can be difficult to explain if you have never smelled it before. The best way to describe it is extremely overwhelmingly musty, but with a lingering smell of acidic odors. The smell is so overpowering and distinctive, that once you have encountered it once you will not forget it. In fact, you will often be able to walk into a building with bats and, even without being told, know that there are bats there.
Since bat colonies can grow to large numbers, the guano can very easily become very deep and cover a large amount of space. This can be a huge problem for you as the guano is capable of eating through drywall or wood in your home. Mold is also capable of growing under the guano. The smell and rich nutrients can also attract cockroaches and other pests into the home.
Guano can also drip down the exterior walls of your home, which is common when dealing with bats. You can also find guano near the entrance points that the bats have been using to enter the home.