Caig is the only brand to buy. I have used it for years.
WD-40 isn't an electrical contact cleaner, it's a mechanical lubricant, not a good idea for electrical situations. Caig is what you want.
Ah, hasn't seen that one.The one I've used is a Contact Cleaner. WD-40 is a brand with a range of products for different applications
https://www.wd40.com/products/contact-cleaner/