I once bought some of these Swab Plus - bascially a Q-tip with liquid in the hollow stick. You snap the neck, and the liquid saturates the cotton swab. I remember the one I had had an antiseptic plus a topical pain reliever - like a really light dose of lidocaine? Something similar to that. The kids didn't mind getting dabbed with it vs. the drama over pouring a little hydrogen peroxide over a cut.

Not sure that these would be practical for a big road rash - you'd probably go through half a box. Also, I'm not seeing one with a pain reliever on their Web site here. The packaging is different than when I'd bought them - perhaps they don't offer it, or I'm just not seeing it listed.
SwabPlus

Dave