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Posts: 5043
Yep
10/14/2018 at 10:02 PM
A good, old-fashioned clothesline.
My whites are super white after hanging out in the sun.
Otherwise, I would make sure your detergent is rinsing completely (most modern detergents leave some residue), which you can counteract with adding vinegar to the rinse water.
Or good old fashioned bleach. But only a little - too much I find will yellow them, especially synthetics.