I'm not sure exactly what you are looking for, as in only natural treatments or something. I know my younger brother is on a patch for him ADHD. It's relatively new, and you can ask your doctor for a sample of it to try it out for yourself.
If you meant an all-natural alternative to prescription medication than I have heard about dramatic diet changes having positive affects on people with ADHD. If you look up ADHD forums online there are entire forums about it with moms of ADHD kids and people with it themselves explaining it and the success rates with it.