A lady who sells vintage linens at the big flea market in Canton, TX gives the following recipe and it works on most stains except old old blood stains. The recipe is 1 part dishwasher detergent(ex. cascade), 1 part clorox II, 1 part Biz. Dissolve these in hot water. Let cool to temp you want and soak dirty linens for however long you want or till stains are removed. You can soak them for weeks. Hope this helps you.