wasps

We have painted concrete board on the outside of the house. Occasionally, I’ll find a mud wasp nest and break it apart. Unfortunately , there always remains a good part that sticks to the board. Anyone have idea on how to remove the last mud?

Everything I have has a cab. This is just one of the many reasons. Are you a cab, or open station type?

Very aggressive wasps made a nest overnight in the rollover bar, entering through the small holes for accessory mounts. I sprayed the hole from a distance and they've moved on or otherwise are no longer a problem. However, I am unsure how to clean out the residue which seems to be...