Re: PF + Wool = Rash???
The vinegar makes the wash very acidy. Have you tried using less or cutting it out a few loads? Baking soda should neutralize it.
What temp are you washing at and how many days between?
How much Sodosan are you using?
I think you would smell build up, do the dipes smell smelly right after a pee?
Every 2 or 3 days, I do a short cold wash and a second longer hot wash with detergent/soap nuts. When I do not, they smell funky after a pee. (Even if I do a hot wash with prewash or extra rinse.) But these dipes are usually just peed in.
Is he pooping a lot, or more than usual? Eating acidy things?