my son who is 28 banged his knee on a four wheeler and has an open gash that is deep. It looks like you can see the bone. He won’t go to the hospital to get stitches so I’m trying to figure out the best way to tend to it at home. He poured alcohol on it an then put antibacterial ointment on it with a bandage. I’ve told him not to use alcohol and though he should put ice on it to keep swelling down.