I was hopeful after the last bath because the recent shed meant Nim had fewer mites on his body. Two days after soaking Nim, cleaning the enclosure, and using more PAM than the can instructs, the mites are as numerous as ever. At this point I have tried this long enough to determine that this approach isn't going to work.
I'll take Nim to a vet, but then he's getting Afoxolaner one way or another. Well tested or not, I doubt it'll be worse than being chewed on by mites while PAM does nothing.
I know Homebody recommended bringing my BP as well, but I'm currently sure she doesn't have mites. The mites are super obvious in Nim's enclosure, and no signs in the bp's. I'd be worried about somehow cross contaminating them during transport.