In most cases, the best course of action is to leave it alone. If you’re worried about its location (for example, if it’s on a gate that gets frequent use), you can carefully relocate it by cutting the section of material it’s attached to and placing it in a sheltered spot nearby.
2. Mud Dauber or Wasp Nest
Another likely explanation is a nest built by mud daubers or certain types of solitary wasps.
These nests often appear as:
- Hard, clay-like clumps or tubes
- Brown or gray in color
- Attached to vertical surfaces like fences, walls, or eaves
Unlike social wasps, mud daubers are generally non-aggressive. They build these nests to store paralyzed insects or spiders as food for their larvae.
Should You Be Concerned?
Not really. Mud daubers rarely sting unless directly handled or threatened. In fact, they can be helpful by controlling spider populations.
What You Should Do
If the nest is in a low-traffic area, you can leave it alone. Once the larvae mature and leave, the nest becomes inactive. If it’s in an inconvenient spot, you can remove it with a scraper—but it’s best to do so when you’re sure it’s no longer active.
