I use a lot of vintage and antique textiles in my housewares, so I’ve removed thousands of those rust and yellow colored stains from doilies, linens, and lace. Personally, I think the three best stain fighters for delicates are cream of tartar, lemon juice and Oxiclean. Sometimes I use all three for tough stains! Mix a couple teaspoons of each in a bowl of warm water and soak smaller pieces for 30 minutes. Agitate with a spoon or your hands, rinse with warm water and hang to dry. For larger linens, fill your washer with warm water and add 1/4 cup lemon juice, cream of tartar and Oxiclean. Let it agitate to mix and then stop the washer from proceeding through the cycle (this won’t work with front loaders). Add the linens or lace and soak for 30 minutes before starting the washer again on the delicate cycle. Hang to dry.