Asked November 09, 2020, 10:31 AM EST
Ingham County Michigan
This looks like nests of the grass-carrying wasp, a beneficial pollinator. You may be able to encourage them to build elsewhere by providing an insect ‘nest box’ of the correct diameter(8 mm) as described here-
You could also cut styrofoam, screen, or cardboard covers for the track and insert them, when the tracks aren’t used for holding the frame.
More info here- https://extension.psu.edu/grass-carrying-wasp