My ds had diarrhoea and pooped in the bed and it went through the sheets and mattress protector. I cleaned the mattress with napisan and it looks ok relatively speaking but I put the mattress protector and sheet on a 40 degree wash with Vanish oxi action and Daz in the wash. The stain is still very much on the sheet and mattress protector. It's yellow.
Is there anything that will remove the yellow stain?