Recommended Free Tools
No—not if you need a contact cleaner. WD-40 says its standard Multi-Use Product leaves a protective lubricating layer and is not a contact cleaner. It can displace moisture on electrical contacts and printed circuit boards, but that is a different job. For cleaning metal electrical contacts, the company recommends its separate WD-40 Specialist Contact Cleaner.
Regular WD-40 and contact cleaner do different jobs
WD-40 UK states that Multi-Use Product “is not a contact cleaner” and leaves a protective lubricating layer on the surface. That layer may be useful where protection or moisture displacement is wanted, but it is not the same as cleaning contacts without leaving that layer. WD-40 UK’s FAQ makes this distinction directly.
| Product | Intended job | Layer after application |
|---|---|---|
| WD-40 Multi-Use Product | Can displace moisture from electrical contacts and PCBs; the manufacturer does not identify it as a contact cleaner. | Leaves a protective lubricating layer. |
| WD-40 Specialist Contact Cleaner | Manufacturer-recommended option for cleaning metal electrical contacts. | Designed for contact-cleaning applications; follow the product label and device maker’s instructions. |
The distinction matters in construction equipment, controls, switches, and other electrical gear: if the task is to clean a metal contact, use a product specified for that task rather than assuming the familiar Multi-Use Product is interchangeable with it.
When Specialist Contact Cleaner may be appropriate
WD-40 lists the Specialist cleaner for sensitive electronics and electrical equipment, with examples including motors, relays, panels, generators, circuit boards, controls, printers and copiers, switches, tape heads, and precision instruments. Its technical data sheet advises testing on a sample and consulting the manufacturer for precision instruments.
#1 Best Overall
- WD-40 Specialist Contact Cleaner is ideal for removing oil, dirt, flux residue, and condensation from sensitive electrical equipment. This quick drying, residue-free formula is safe on metal and plastic
- Cleans sensitive electric equipment. Quick drying. Safe to use on most plastics 1, rubbers and metals. 1 Test on plastic before using, and avoid adhesives, device screens, and keyboards
- WD-40 Specialist offers easy solutions for specific problems. WD-40 Specialist line is designed with industrial strength quality for your tough jobs
- Blast away oil, dirt, flux residue and condensation from sensitive electronics and electrical equipment with pinpoint precision. It's ideal for use on printed circuit boards, controls, switches, precision instruments and electric panels
- WD-40 Brand believes in creating high-quality products that will not fail in extreme conditions. Professionals rely on WD-40 Specialist to get the job done right
Those examples are not blanket compatibility approval for every device or material. Before applying any cleaner, check the equipment maker’s instructions, especially where connectors, coatings, plastics, rubber, or precision parts are involved.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Safe application: isolate, apply cautiously, and let it dry
- Check the equipment instructions. Confirm that the device maker permits contact cleaner for the part you intend to clean.
- Isolate power. Disconnect or otherwise isolate the equipment before application, following its service procedure.
- Let hot surfaces cool. Do not apply the aerosol to hot equipment.
- Use only where vapour can evaporate. WD-40 advises against spraying into cavities, openings, gaps, or areas without sufficient airflow for evaporation.
- Wait for complete drying. Do not restore power until the product is fully dry and the equipment maker’s instructions permit it.
For its US Specialist Contact Cleaner, the safety data sheet prepared December 18, 2024 identifies the product as a flammable aerosol and lists additional health hazards. Read the current label and safety data sheet for the product sold in your market; hazard classifications and instructions should not be assumed to be identical across regional versions. WD-40’s US safety data sheet provides the US product’s specific hazard information.
Quick Recap
Rank #4
![WD-40 Specialist Contact Cleaner, Fast-Dry, No-Residue, 13.3 OZ [6-Pack]](https://m.media-amazon.com/images/I/51S-OcC148L._SL160_.jpg)
- ONE-STEP ELECTRICAL CONTACT CLEANER: High-performance contact cleaner removes oil, dirt, flux residue, and condensation for reliable electrical connections.
- CLEANS BATTERY TERMINALS & ELECTRIC MOTORS: Ideal electrical cleaner for battery terminals, motor contacts, switches, and electrical panels in automotive and equipment maintenance.
- SAFE FOR SENSITIVE ELECTRONICS: Designed for use on circuit boards, contacts, controls, and internal electrical components without damaging parts.
- FAST-DRYING, NO-RESIDUE FORMULA: Dries quickly and leaves no residue, reducing downtime and eliminating the need for follow-up wiping.
- RESTORES ELECTRICAL PERFORMANCE: Removes most common surface contaminants to help improve conductivity and equipment performance.
Rank #3
![WD-40 Specialist Contact Cleaner, Fast-Dry, No-Residue, 13.3 OZ [1-Pack]](https://m.media-amazon.com/images/I/31WHvxvHHiL._SL160_.jpg)
- ONE-STEP ELECTRICAL CONTACT CLEANER: High-performance contact cleaner removes oil, dirt, flux residue, and condensation for reliable electrical connections.
- CLEANS BATTERY TERMINALS & ELECTRIC MOTORS: Ideal electrical cleaner for battery terminals, motor contacts, switches, and electrical panels in automotive and equipment maintenance.
- SAFE FOR SENSITIVE ELECTRONICS: Designed for use on circuit boards, contacts, controls, and internal electrical components without damaging parts.
- FAST-DRYING, NO-RESIDUE FORMULA: Dries quickly and leaves no residue, reducing downtime and eliminating the need for follow-up wiping.
- RESTORES ELECTRICAL PERFORMANCE: Removes most common surface contaminants to help improve conductivity and equipment performance.
Rank #2
- WD-40 Specialist Contact Cleaner is ideal for removing oil, dirt, flux residue, and condensation from sensitive electrical equipment. Quick drying and residue-free
- Cleans sensitive electric equipment. Quick drying. Safe to use on most plastics 1, rubbers and metals. 1 Test on plastic before using, and avoid adhesives, device screens, and keyboards
- WD-40 Specialist offers easy solutions for specific problems. WD-40 Specialist line is designed with industrial strength quality for your tough jobs
- Blast away oil, dirt, flux residue and condensation from sensitive electronics and electrical equipment with pinpoint precision. It's ideal for use on printed circuit boards, controls, switches, precision instruments and electric panels
- WD-40 Brand believes in creating high-quality products that will not fail in extreme conditions. Professionals rely on WD-40 Specialist to get the job done right
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
