WD-40 Specialist Contact Cleaner Electrical Spray, 400ml with Smart Straw, Fa...

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.

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.

The Short Version: A quick-drying solvent spray engineered to clean oil, dirt, flux residue, and condensation from sensitive electrical components without leaving residue behind. Key Specifications & Context: Model/Variant Tested: 250ml Aerosol Can with Straw Test Duration: 2 weeks Primary Use Case: Cleaning oxidized potentiometer volume knobs and game controller drift switches What Works Well (Pros): Leaves Zero Residue: Evaporates almost instantly without leaving oily film or moisture spots behind on circuit boards. Plastic Safe: Formulated to be safe on delicate plastics, rubber seals, and sensitive electronic circuit components. Precision Straw Straw Attachment: Comes with a smart straw nozzle that blasts precise bursts directly into tight switch housing slots. Room for Improvement (Cons): Strong Chemical Smell: The solvent vapor is powerful, requiring application in a well-ventilated space away from open sparks. Rapid Consumption: A 250ml can drains quite quickly if you use long continuous blasts rather than short targeted bursts. Real-World Testing & Fit/Function: Used this to fix stick drift on a game controller and a scratchy volume dial on an old audio receiver. Disconnected the power, sprayed two short bursts into the component housings, and worked the controls back and forth. Within two minutes, the cleaner flushed out accumulated dust and completely evaporated. Upon powering back up, crackling noises and stick drift were gone. The Bottom Line: An essential technical spray for repairing scratchy switches, cleaning circuit boards, and maintaining electronic gear safely.

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

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.

thiis thing has saved me more times than i can count quick squirt brush whatever im working on with a brush and it dries a couple seconds later

I'm happy with this purchase and have had no issues with it. Overall, I'm pleased with my purchase.

Just the job