Check out the rubber ring ( or called door seal) to see if there is black mold build up inside the bottom rubble. 0 D e8 N* N8 W) @5 ]# s# Y9 [ # I* Q( p8 f( _3 i% k! K. [7 BIf it does have mold and can not be wipe out, then you have to change out the whole seal.. I bought a new seal and changed out few weeks ago.