Look for the ringleader. Kill her, and the rest will usually fall into line.
If that doesn\'t work, I then capture 20 of them, pull their heads off, and impale them on my arm hairs. Imagine pulling up to the drive-through for an order of extra-big-ass fries and seeing the heads of 20 of your buddies stuck on pikes. That\'ll kill your appetite.
As a last resort, just squeeze your skin when they have their proboscis stuck in you. They won\'t be able to pull out and will explode.