Hi all! Haven't posted in awhile but I have a Cleaning Conundrum, related to my white Allbird Tree Runners.

We just got back from three weeks in Australia (one week in Adelaide area and two weeks in Sydney) and my white tree runners got pretty sooty. I wasn't running around in the fires rescuing koalas, just walking around normally, but pretty sure this is sooty dirt.

As soon as possible upon returning, I popped them in the wash following the Allbirds recommendations, and it didn't make a dent. So I next sprayed them down with stain remover, and soaked in Oxyclean. That helped a bit, but there's still sooty stains ... specifically in the outline of my five toes!

I know you can't use bleach (will turn the shoes pink). Has anyone tried bluing agent? Or have any other suggestions (short of buying another $95 pair)?