If you keep your pedals around long enough, odds are that you've had this problem. You reach down to turn a knob and hear a lot of noise, or the signal may cut out completely. Here's a quick and easy way to fix it generally. It also works on switches.
Be warned though - you don't want to do this too often as it can wear down the insides of a pot if used too often.
Also be careful using chemicals of any kind, and read the directions on the can. Here's the link: https://www.amazon.com/dp/B000BXOGNI/ref=cm_sw_r_cp_ep_dp_44Yjyb7JHBC4M
Music by Chris Accardo
https://soundcloud.com/chrisaccardo