The key is to continue maintenance after main treatment. Most people due the treatment and then stop. You want to continue using it in much smaller doses to keep it from coming back. Also changing your diet will help significantly. Check out the PH Miracle by DR Robert Young.
Since February of 2013 I had been getting mine from 3 D dispensary on Brighton Blvd. They do still have some with high CBD content but only 40% THC down from 65 % or more that they've had in the past. They sell it for $40 per gram. Now that recreational is legal they are no longer taking...