My husband stripped our deck using a sprayer. As a result, the deck stain splattered onto my vinyl siding. Any suggestions on how to remove the stain from my siding. I have tried a magic eraser and soft scrub. At someone's suggestion I even tried WD-40. I would appreciate any help. Thanks.

If it were new deck stain, the D40 would work. I have always had good luck with a 220 sandpaper or washed steele wool !! Or both.