I thought I'd pass along some product info I was just given. I have some old stereo components that started acting up due to dirty switches and potentiometers. I asked an electronics tech what to use for cleaning and he said most of the products on the market today are not very effective - "the EPA has regulated all the good stuff out of them." He recommended a line of products called DeoxIT, which I'd never heard of. Unable to upload a picture here - stops at 90% for some reason. The red labels (D5, D100) are used for deoxidizing/flushing and lubricating/preserving metal contacts and connectors. The green labels (F5 and Fader lube) are for deoxidizing/flushing and lubricating plastics and components with carbon trace (I assume this is what's inside our Throttle and Pedal Position Sensors). They seem to have worked well on my old preamp components, so I plan to give them a try on my TPS connector and pins before replacing everything. Given the number of electrical gremlins we face with these aging cars I thought this info might be useful to folks. Speak up if you know more about these or other products that might be better.

 

I have used this stuff with some success. The EPA forced many of the CFC
cleaners to evolve

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DeoxIT red label is a favorite of mine too! Impressed with how it eats that white corrosion up.
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I, too, had not yet found an effective spray to clean electrical contacts.
I assume DeoxIT is cheap as chips in the US - here it costs an arm and a leg (AU$50 plus postage).
Luckily I have not yet really found real bad oxidation on contacts, where I would need such a spray - or I may have found something, which was that bad that no spray would have helped, only abrasion with e.g. sandpaper.
But what I do use is CRC 2.26, which is an electrical contact lubricant.

 

A 5oz aerosol can of D5 is $18 delivered - twice the cost of the other cleaners on the market here - so not quite cheap as chips. I've discovered it doesn't require visible corrosion to upset an electrical connection on these systems. Will let folks know if this resolves my throttle issue where other cleaners did not.

 

Yes that's about what I pay and as Doug posted it's not cheap but it is effective! It also lubricates the switch contacts.
I have tried a number of electrical cleaners but again I have never had one that would eat that white corrosion off the electrical contacts. I had a fuse box in the foot well that got water in it from a leaking windshield. Lots of white hair! Tough to scrub it to with the geometry of fuse boxes. This just removed it completely with no damage to anything.
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