"Well, that's certainly one way to get its attention," Percy comments as he dives out of the way before one of the little ones can get a hold of it. "I take it you're familiar with its brethren then? Does it have a weakness?"

Is the weakness gunpowder? Percy, you can't keep shooting everything.

Or maybe this calls for a longsword. He must save that ammo, after all, seeing as how it does not look like he will be purchasing black powder anytime soon.