Technician in hazmat suit scooping guano in an attic

We don’t always recommend guano cleanup for our clients that have recently undergone a bat removal. We take guano cleanup on a case by case basis. 

Of course, the most obvious question is why. Why do we not always recommend you cleanup bat guano and urine?


Trust us, we get it. Guano is gross. We have a lot of clients that we’ve flat out told, “cleanup isn’t necessary” that still hire us to do guano cleanup. They just don’t want to leave it.

So, under what circumstances does guano absolutely need to be cleaned up?

  • When it is in an area that needs to be accessed regularly. If you have bats that have made a mess all over your seasonal decorations stored in the attic and you want to be able to take them out and put other storage items in there, leaving the guano is a bad idea. Bat guano is dangerous in the right circumstances when disturbed.
  • When there is an odor. Trust us on this, you will know when you have a bat odor. They can only be described as pungent.
pile of guano in the attic

But, here is a few examples of when you can leave it alone:

  • When the guano is in a sealed area such as a wall cavity or inaccessible attic space. There is no risk of it being disturbed unless you start tearing down walls or ceilings. And even in those circumstances, it is most likely that you will do that years down the road after the guano has dried out and no longer poses a threat.
  • When there is scattered guano and no piles. You really don’t need to go through the expense of hiring a professional guano cleanup specialist. Get a good shop vac with a hepa filter, use a respirator (something better than a dust mask), and vacuum it up. Trust us, you will save yourself money even if you have to go buy the vacuum.
  • When you have a log home and it is scattered in between the beams. This guano will fall out naturally on its own. While it may be gross to find some scattered guano on the floor after a windstorm, it is safe to again just vacuum up.

what are you willing to pay?

In reality, most of the time guano cleanup comes down to a comfort level. If you absolutely don’t want it around and there’s no odor issues, hire us to clean it up. If there are piles of guano, you definitely want to hire us to clean it up. But the nice thing is, we’ll tell you honestly whether you NEED it or not.

If you just want us to assess the situation and tell you what you’re up against, give us a call. We’ll discuss it and review pictures for no charge. We don’t want you to live with uncertainty, but we also don’t want you scammed by someone telling you it has to be done.

Your local bat removal expert,

Michael Koski

Get Bats Out Owner and President Michael Koski

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  • Gayle

    February 28, 2021 | Reply

    Hi and thanks for your trusted expertise! We had bats in our attic 4 years ago. We have some guano still up there and unfortunately a lot of misc. stored items. We want to now clean the space. Is there a period of time when the guano is less toxic? We will be purchasing a hepa vacuum to aid in the cleaning. The guano is in smaller scattered areas. Any advice is greatly appreciated. gayle

    • Tori Bruce

      March 3, 2021 | Reply

      Hi, scattered guano that has been drying out for 4 years should be safe to clean. I do recommend a respirator though, in addition to the Hepa filtered vacuum.

  • Melissa

    August 3, 2018 | Reply

    Bats are in our wall. Once baby bat season is over and we seal up areas they are getting in and out of..should we worry about cleaning guano in the walls or would we be better off not disturbing it. We are in Lexington KY ....thank you

    • Tori Bruce

      August 3, 2018 | Reply

      Hello Melissa, Every bat infestation is different so there isn't a set rule, it's a case by case. Our customer service department would be happy to get more details and help you determine if you can leave the guano alone or not. Please feel free to call and have a consultation. 877-264-2287.

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