Don't listen to all the others @Accy cyclist . To get that chocolate out you really need to put a lot of washing up liquid in with the wash.
Its good fun at a party to empty a bottle into the toilet cistern.
Is it harder than a Ross Kemp documentary?
I've just emptied the washer. To my great surprise the chocolate stain has 99% vanished! So washing up liquid must work.Don't listen to all the others @Accy cyclist . To get that chocolate out you really need to put a lot of washing up liquid in with the wash.