Electrical Contact Cleaner Spray, Residue-Free - 400ml | Used in Circuit Boards, Switches, Sensors & Gaming Equipment, WD40 Electrical Contact Cleaner For Computer Part & Accessories

Very good quality. It dries very quickly (around 20–30 seconds). I used it on my car's wiring and electrical connectors, and it worked perfectly.

excellent contact cleaner - does just what it says it does

Came to use my battery operated garden equipment after lying idle over the winter period and they wouldn't start or if they did the results were patchy. The equipment was stored in a dry environment but would have been subjected to rises and falls of temperature. didn't expect the electrical internals to the kit to have issues so didn't use the spray straight away. However, I eventually indiscriminately flooded the electrics with the spray using the very handy directional straw, left it for a couple of minutes then manually jigged the cutting blades / chain before reapplying power (DON'T forget to do this with the battery removed / unplugged) and they sparked into life. Can only think that a very small amount of moisture had created a corrosive barrier on contacts (not that I know !) but irregardless the product worked and thus a much more economical solution than alternative choices.

Appears to work as advertised. Happy with the product. Application tube useful for applying in tight corners.

Easy to use and highly effective, this contact cleaner evaporates quickly, helping reduce downtime during maintenance and repairs. The 400ml can provides plenty of product for regular workshop or household use, while the trusted WD-40 Specialist formula ensures dependable performance. Whether you're maintaining automotive electrical systems, power tools, or home electronics, this spray offers excellent cleaning power, convenience, and value for money.

exellent product

good value

Does the job - had some aging guitar pedals which even though kept in a closed pedalboard case had become scratchy/noisy not just on pressing the pedals but with quite some residual noise once activated; once I had opened the pedals and given the contacts a spray all the noise had gone, just a little pop of the pedal being pressed as the residual. The spray (slightly sticky) is noted to be non-conductive which is important I guess, as it does spray beyond the target area somewhat even with a fine nozzle.