 So you can remove those, inspect them for that. And if you have a compressor, you can blow them out with a few blasts of your air gun. You can tap them out. You can knock them on something hard and try to knock the dirt out of them. Sometimes if you just let them dry out, absolutely, totally, 100% dry out and then knock them, everything falls out and comes out of them because those little particles don't weigh much. And when they're wet, they stick together.