For receivers with volume control static

I've got an older (~15 years) Yamaha receiver with an analog volume control...and it has static when I adjust it. Here's how an audiophile suggested to clean it:

1. Unplug the unit
2. Remove cover.
3. Find the volume pot (the thing that the volume knob adjusts. Usually a cylinder the diameter of a quarter, maybe an inch in height.)
4. Spray some contact or tuner cleaner in there (available down at Radio Shack)
5. Spin the volume knob about 20 times.

WD-40 might work in a pinch, but it also might gum up the works. Be advised that volume control pots are usually found in pairs (L&R), but are sandwiched together.