WD40 and some tissue, spray onto tissue wipe off

NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
You would be better off using just kitchen towel than covering your components with WD40.
If you have Nowt else then use Lemon juice, otherwise get some TIM.
can i drop a drop of real lemon?
probably better to dampen kitchen towel or tshirt first then gently rub gunk off cpu