Can WD-40 Be Used To Clean Electronics?

Here is a short answer.

The popular WD-40 product, which is used to remove rust, lubricate mechanisms, and protect against moisture, is absolutely unsuitable for cleaning smartphones, computers, and other electronics. The residue it leaves behind can attract dust, cause short circuits, and even lead to the device catching fire, according to Engadget.

“The short answer is no,” the publication responds when asked whether regular WD-40 can be used on electronics.

The problem lies in the product’s chemical composition. Despite its ability to displace water, it contains petroleum-based lubricants and anti-corrosion additives. After application, a film remains on the surface that, over time, collects dust and dirt.

Even more dangerous is that this residue can conduct electricity and is flammable. If the product gets inside a USB port or onto sensitive components, it can damage the electronics, cause a short circuit, or start a fire.

“All drawbacks and no benefits”—that’s how the author of the article describes the use of regular WD-40 for maintaining electronics.

Instead, the manufacturer offers a specialized product: WD-40 Specialist Contact Cleaner. It dries quickly, leaves no residue, and does not conduct electricity.
For general household cleaning, 90–99% isopropyl alcohol, a can of compressed air, and a microfiber cloth will also work.

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