It's not altogether uncommon to see golfers with clubfaces that are abysmally filty, their grooves' utility diminished because they're filled with dirt. Here's a possible solution, a multipurpose towel called Spotless Swing.
The inside of the towel is for the purpose of wiping the clubface clean. The lower inside of the towel features MicroBrush fabric for the purpose of removing dirt from the grooves. The outside of the towel is for anything else, wiping your face or hands and grips.
MSRP: $24.99. It's not an unreasonable price for a towel that does more, notably allowing the grooves to do the work they were intended to do, which is to impart spin on the ball.
-- John Strege