He's supposed to be doing his own washing. Yesterday other day, not being able to bear the smell emanating from his room any longer, I investigated and found 4 7kg machine-loads of dirty clothing lying around his room. He's been wearing mismatched socks for months because half of all his pairs of socks were lying festering under furniture.
He was lucky enough to be given three large binbags of outgrown clothes by a friend's son a year ago and he barely ever has to do any washing. I think that subtly removing clothes until he has a manageable amount might be the solution.
How many clothes do think it is reasonable for a boy to have? How much did/do your sons have at that age? AIBU to cull them without really telling him (can guarantee he won't notice).