What do you use?

[Midway Tommy]

I only mess with spinners and they can require a little finesse to get into some of those tight little cracks & crevices, so I use these. They seem to last forever as the only one I've ever broken out of the pack is over 10 years old. 

[Shark Hunter]

Small wood handle brush. The bristles don't come off easily.
I've spread at least two pounds of penn blue with this one.

[Tightlines667]

Toothbrushes, rod coating brushes, small paint brush, Q-tips.

John