Here's a quick solution for cleaning noisy hard-to-reach control pots (CTS brand), without extracting them from a guitar or amp. It's a real labor-savor for archtop guitars, and it even works for Gibson Varitone switches, too. Simply remove the control knob and screw on the Pot Cleaning Cap. An access hole guides your spray cleaner extension tube directly to the pot shaft. The cleaner flows down the shaft to where it's needed at the contacts. A hole in the top of the cap lets you turn a split pot shaft with a screwdriver for thorough coverage as you spray.