Lawn damaged from urine and feces can often be a frustrating problem. Green-um is a natural nutritional supplement with amino acids, B vitamins and vegetable substances, Green-ums active ingredient is Glyco Component C1 from the Yucca Schidigera Plant, which prevents unsightly lawn burn from dog urine. It binds or neutralizes the nitrogen compounds in the urine or feces. It is effective within one day of use. It does not effect the internal organs of the dog.