Starting fluid..... interesting idea. Never heard of this solution. Would you pour it onto the device? Or use a clean rag and pour some of it on it?
It comes in a pressurized can.
I know that it sounds caustic or terrible in multiple ways, but after I tried it I was convinced.
Ever have older electronics with a 'crunchy' sounding volume knob?
Fixed.
Even on my bass and guitars, also on the amps that I use.
My CB radio.
Boomboxes with crud in the switches.
Even sprayed out an entire mixing board from the '70s that was crunchy and had dead spots in all the sliders- the thing worked like new again.
There is the 'professional' stuff- Peavey makes a product called Funk Out, but it is incredibly more expensive, at least $20 for a small can- whereas starting fluid is in a large can for $3 - $5.
Also, anything sprayed with Funk Out will need frequent respraying, like an addiction- but I get virtually permanent results with starting fluid.
Once again- this stuff is some of the most flammable stuff you can get.
Be sure to use it outdoors away from any sources of ignition.
I prefer a hot, windy day.
Makes the stuff dry up fast.