Youngest had some white undershirt/t shirts worn for outside work (no clue as to why). After they were washed and didn't come as clean as I like, I soaked them overnight in some pinesol and hot water. Then tossed them into the next load of whites with Dynamo & a little bleach as usual. Well, that whole load of whites was way way cleaner! The towels seemed fluffier and more absorbent than they usually are.
I don't know if that had anything to do with the additional pine sol (it's good at degreasing soap scum in the shower).
I'm calling it my happy accident. Of and the shirts? Those are toast.....now for wearing for yard work and in the shop grrrr.