No-bleach method for whitening sheets. Materials: large basin full of hot water (big enough to hold your sheet), ¼ c baking soda, 1c distilled white vinegar, 2T dish soap, juice of a lemon. Fill basin wth hot water. Add baking soda, vinegar, soap & juice of a lemon and mix using tongs or long utensil. Fully submerge your sheet and soak for 30 minutes. Wring sheet out and wash as normal.