I've tried Mitchum, and it just didn't work for me. The protection didn't last. Its probably a body chemistry thing. However, I recently picked up some Arm & Hammer Ultramax, and all I can say is: wow. They advertise it as 36-hour protection, and they actually mean it. Plus, its unscented, which is important to me (so it doesn't mix negatively with whatever scent I'm wearing). I've been seeing it all over town lately, so it shouldn't be hard to find. And its quite cheap.