Old urine rocks. It is much more effective than fresh. I used it for my gum problem of 15 years and got a lot of relief. I soaked cotton in old urine and placed it between me lips and gums for many days. Surprisingly my general health improved too. Note that I also drink fresh everyday and I am feeling a lot better and younger practicing this therapy. Stay away from doctors even if you are dying don't go a hospital. They will kill you sooner and painfully at that.