Re: Question about ammonia stink
They aren't getting clean - it's bacteria that's making the smell.
urine is sterile but when you mix your pee and poop diapers in the wash that first rinse to get the ickies off just swirls poop around everything. So, even if it was "just" a pee diaper it's getting poop into it during that rinse. Then they all need to be disinfected. I would keep adding bleach and up the detergent. You may need to change detergent. If you are worried about upping detergent just add another rinse at the end. You need to kill the bacteria.
Wife of E, Mom of B (10/11)
"More Baby" coming May 2014
ISO - Curious George Twin Pottery Barn bedding... will pay with PP.