Dandelion is free. Recently used it to cure bladder and kidney infections in both my granddaughter and my daughter. Used the dried leaf which I had collected and dried. It really does work. Use one rounded teaspoon per six to eight ounces of boiling water. Let it steep for at least five minutes before drinking. If the infection is severe two rounded teaspoons may be used per cup. Do not use dandelion leaves that have been sprayed with chemicals or that have been collected from along roads or highways. I have very old dandelion plants that grow leaves that obtain 14 inches in length and 8 to 9 inches wide and collect them every year to dry. Dandelion also makes a good body cleanse and was used by the pioneers as a spring tonic. Some people do not care for the taste of the tea so adding a mint tea and some honey to it improves the taste. My daughter says she doesn't mind the taste.