M.W.
Hi S., Have you tried special underwear, that he would not want to dirty. For instance my grandson loves THE CARS character, Lightning McQueen undies. Or Superman or Thomas the Tank. Tell him he can wear these special underwear only if he does not wet or dirty them. Another trick is to reward him with an M&M everytime he uses the potty
A LITTLE ABOUT ME: Mother of nine grown married children and grandmother of 41 soon to be 44. Wife of a doctor.