I read a post here somewhere only few days ago of someone mentioning that if you put something with a stain to dry in the sun it makes the stain fade.
Well, OMG, I am approaching 50 and never known!!!
Today I took out of the washing machine a white t-shirt with still some light yellow stains (my son's antibiotic, he spit it out!). I normally would put it back on the pile of things to wash, with mental note to spray it with some stains removal before the next load.
However, I remembered that post and put it to dry in the sun. It's magic. The stain has COMPLETELY gone.
I will do this more often now:).
Thank you to the lady who wrote about it - wherever she is!