Mom of 4 here - We use Schmidt's as mentioned by someone else - love it. Wal*Mart has some generic brands similar to Tom's that we use & like. All depends on how strict you are when you say "natural". My Italian husband & I (mentioned italian bc he S.W.E.A.T.S.) went completely natural - as in NO deodorant for about 2 years. There was DEFINITELY a detox stage for me where my body shed lots of harboured toxins and I smelled like a buzzard.  But then things evened out and I just had to shower daily to stay fresh. I eventually started using Schmidt's bc whilst pregnant. Anyway, my husband still wears nothing and smells fine! So, short answer: Schmidt's, Wal-Mart generic of Tom's or NOTHING.