Asked September 16, 2020, 8:01 PM EDT
Jackson County Michigan
This is a bald-faced hornet nest. They will die after a couple hard freezes. The nest will not be reused. Some wildlife will eat the dead insects over winter, so it can be a benefit to wildlife if it is not endangering you. If you find it unsightly, you can knock it down this winter or next spring.
Here are details, and control options if their activity is too near for you to feel safe.