Well, it will be a year in September that I switched to baking soda only as an underarm deodorant. I can tell you now from experience that it works! I don't stink and my family has not begged me to switch back! I figured that late Spring/early Summer in CA would be a good test, but, let me tell you: Summer in OK definitely puts the baking soda to the challenge. Most of you know by now that I moved here in Early July. I have been here for over a week in sweltering heat with high humidity. Even when working in our new house, with no A/C because we don't have electricity yet, my pits are still odor-free. I am drenched from head-to-toe, but no b.o.!
Look back on my blog in on 11/9/09 if you are interested in the process of switching over. I think it was a good decision for me, and I am happy to decrease my toxic load in one more small way!