I know they grow up so fast but it's never to soon to apply some soap in a sock discipline. There are probably a bunch of other ways to beat your kids without leaving bruises. Just Google it and I'm sure you'll find plenty of support groups. Once they hit 6 you can start using the full size soap instead of the little hotel sizes. Then once they reach their feisty teen years you can graduate to lava soap which works on even the toughest pains in the ass.