After seeing more than one Facebook post about the WD40 ‘secret ingredient’ being fish oil, there is a lot of mis-information about WD40.

One thing that a lot of people know is that it can be a great stain remover – and it’s not because of the fish oil!!

In fact, there is no fish oil in WD40!

A quick visit to the website will soon put that rumour to bed.  The same website will also quickly say that the ‘secret sauce’ is a 50 year old secret and it’s staying that way.

Why is WD40 a good stain remover??

Well, that is a fairly easy question to answer.  And the answer is on the WD40 website, even after they say they’re not telling you about their ‘secret sauce’.   Just look at the Material Safety Data Sheet.

In Section 3, the major ingredient is listed as ‘white spirit’.

Another common name for white spirit is dry cleaning solvent.  So, when you spray a stain with WD40, you are basically dry cleaning the stain.

So why don’t more carpet cleaners use WD40?

It’s a matter of insurance. WD40 is not a stain remover – it’s a dewatering solvent.  So, if something goes wrong, my insurance company won’t pay up as I was using a product that wasn’t designed as a stain remover.

The main issue is there are other ingredients in WD40. While the white spirit might be perfectly safe to use, it’s the other additives that can cause issues with the client’s magnificent upholstered chair.