Annoying SO

I'm soooooo disgusted and fed up with my SO and his ball scratching. Dude, just shoves his hands down his pants and scratches his balls. I ask him to wash his hands after atleast, since I don't want him touching our children after that, nasty. I can't sleep as it is at night and he scratches his balks literally 10-15 times in his sleep at night. I'm ready to smack him in the nuts next time he scratches.