Squatters

I love wind chimes. The sound of them stirs up weird sense memories from my childhood I think. We bought this really cool wind chime when we were in San Diego a few years ago. It was made of shells. It doesn't make much of a tinkling sound...just a sort of clacking noise, so no sense memories, but it's really neat looking.

Hopefully, you can see it well enough in that picture. The background, no matter which way I turned, was just too busy and bright. Sorry.

Anyway, I've noticed recently that there's all these flying bugs circling around the thing. I couldn't figure out why, but yesterday I looked closer, and I see a sort of grayish mud down inside some of the cone-shaped shells. I realized that these flying bugs...kinds of wasps, I think...are building their nests inside the shells in my wind chime!

What do I do? I'm afraid to touch it, in case I might get swarmed. I don't want to throw it away though, it's too cool. So, should I just spray it down with raid or what?