Keep Spiders Away
So what’s the WD in WD-40 stand for? Water displacing. WD-40 is mainly used as a solvent. It has lubricant-like properties that do not come from the substance itself, but rather from dissolving components.
Have a fear of spiders? Just spray some WD-40 on places where spiders and other insects can get in, such as windowsills and door frames. It will keep the spiders and other bugs out.