OK, raise your hand if you used to smirk at all those Tide commercials on TV. Clearly that was waaaay before parenting days.
I don’t have a solution for muddy white shorts. I’d say fire the uniform parent, but that creates new problems.
A few weeks ago Holmes came back from a college camp (yes, we acquiesced and sent him to a few) with clothes that were stinky after a full wash. Before drying them, I ran them through the washer again with some soap and a cup of white vinegar. Miraculous! The smell was gone, so now we have a permanent bottle of white vinegar in the laundry room.
Boring but true. 
I LOVE vinegar in the laundry! I put some in a downy ball instead of fabric softener for baby clothes — softens things up and gets rid of detergent residue without adding any unpronounceable fabric softener chemicals.