I'm so late to this thread but must say, I started using it and haven't looked back. It's awesome.
I typically put two fingers that are slightly damp into a bag of baking soda I keep in the bathroom, then spread around my armpits. Doesn't matter how much I sweat, I don't smell anything.
Anyone use Gold Bond powder?
Do any of you guys use vinegar to clean and with your laundry? I've pretty much replaced most household cleaners and bleach with it. I still keep a little bleach around in case, but vinegar and baking soda are about all you need, I think. And so freaking cheap.