Does anyone have trouble getting period blood out of sheets. I've washed my daughter's sheets once at 60 with washing liquid stuff, and then again on a long cold wash with bleach. Hasn't made hardly any difference. Anyone any tips, Im tempted to throw them out but it seems wasteful! They're 100% cotton, but white - I know... have just bought her some dark coloured sheets 😜😏 I mean hotels must be able to get the stains out right