i forget to do that quite a lot.
thankfully, i don't have much of a body odor there, if at all on some days. no lie, i've had people double check me on those days. deodorant actually makes me smell worse by the end of a busy work shift. blech.
problem is sweat. if its busy, summer, and the AC isn't working well, i run the risk of pitting even if it doesn't smell like BO.