Stained baby clothes

JenJar

I started the task yesterday of sorting out all G's baby clothes bins.  I was planning to sort them 3 piles - what I don't want to give up yet, things Baby Sister could still wear, and things to sell.  I was shocked at how many things were stained!  And I know I didn't store them like that.  Some things in there I distinctly remember him NOT even wearing and they had yellow stains on them.  I don't get it.  I sprayed each item with spray n wash, then let them soak in oxy clean and washed the load twice, and still half of the items are stained.  Any tips to try to remove these stains? It really makes me mad!