Yoport via Amazon has Yoport Golf Club Brush & Club Groove Cleaner on sale for $5.94. Shipping is free w/ Prime or on $35+ orders.

Features:

• Wire bristles for quick and efficient cleaning of irons while on the fairway, Sharp pick for stubborn dirt and grime in grooves (Comes with plastic cover).
• The handle is made with extremely durable plastic for strength but it has ergonomically designed soft rubber grips for comfort even when applying heavy scrubbing pressure.
• The retractable 2 ft. zip-line carabiner makes it easy to attach to your golf bag.
• Spike for Cleaning deep in grooves and golf shoes.