By golly, I think I got rid of the ammonia smell!
And it was the Sport-Wash that did it! It took a couple of wash cycles, so after the first wash we were still getting the ammonia smell so I thought it didn't work. However, I've wash a couple of more times and now there's no smell. I did add Borax to the Sport-Wash, but there was a load of diapers I didn't add it to and they don't stink, either. Please let this be it!
A real woman always has a clean house, an empty laundry basket, smells good, is well made-up, slim, healthy, eloquent, and perfectly well behaved...I suspect I am a man.