I have a Bosch washer dryer (rented flat) and I was the children's hand knit cardigans (great grandma) on a 30 degree wool cycle with an 800 spin. They're not wool but the hotter wash seems to make them pill and sort of knot up, can't explain it. Anyway, stains just do not come out. Nor in fact do any stains or marks on any of our clothes that need a 30 degree wash, trousers, wool jumpers etc.
Does anyone have any ideas what else I could try please?