How-To:
Fill a bath tub with hot water and dissolve the Borax, washing soda or baking soda, and laundry detergent in it. Next add your towels and sheets (make sure to only do similar colors together… in some cases it can cause some colors to run. We only have done our white and light colored linens so far.)
Then leave them to soak for the next four or so hours, stirring occasionally. You should see the water turn from clear to a gross yellowish-dirty color.
Once the water cools, drain the tub and squeeze the water from the linens, rinsing them with some fresh water. Then put in the washing machine (with no detergent - your items will already have absorbed detergent and Borax and you want to rinse everything out, not add more soap at this point), and run through the “wash” cycle to rinse everything out thoroughly.
After that you can put them in the dryer, or re-run the washing machine with detergent like you normally would to give them a fresh wash before drying.