Rethink Windex: Here's Why Some People Clean Their Windows With WD-40

Let's be real, there are some pretty weird alternatives to Windex that people use to clean their windows and other glass surfaces. From rubbing potatoes on mirrors to using newspaper to reduce streaking, there is a wide array of products that, though their job isn't to clean glass, do a pretty good job of it. So, when we tell you that people are using WD-40 to clean their windows, you shouldn't be all that surprised to find out that, well, it works.

Since most of us think of it as the stuff we keep in the garage for degreasing tools, cleaning windows is one of the more surprising uses for WD-40. The "WD" in WD-40 stands for "water displacement". The product uses a secret chemical composition to help displace moisture and loosen the bonds of sticky adhesives. It works well for cleaning glass because it cuts through caked-on grime and loosens the minerals in hard water stains for a sparkling, streak-free finish.

Now, there are two things you need to know before you go using WD-40 in your house. One: it has a strong smell, so please make sure there is plenty of ventilation. Two: you don't need to use a ton of it. One small spritz is all you need to get your windows clean and shining. Using too much could get WD-40 into your window jambs, where it could attract more dust and degrade the rubber seal. 

Cleaning your windows with WD-40 is quite simple. All you need is a can of WD-40 – the original formula will do just fine – a cleaning cloth, and a buffing cloth. Spray a small amount of WD-40 directly onto your window glass. Using the cleaning cloth, wipe down the entire window, getting into all the corners you can reach. Then use the buffing cloth to remove any remaining WD-40 from the window glass and dry the surface completely.

If you find a particularly stubborn spot of stickiness or grime, spray it with WD-40 and leave it to soak for a few minutes. This gives the solution time to break down the bond between the adhesive and the glass, so when you go back in a few minutes, it should be much easier to wipe away with a microfiber cloth. Use this same method if you are using WD-40 to remove soap scum or hard water marks.

You don't need to limit WD-40 5o window cleaning inside your home. You can also use it on exterior windows, automotive glass, shower glass, and mirrors. You can even use it to clean the grout between your shower tiles. Just use a little at a time so you don't end up with an extra mess to clean up.