Cleaning of Cat Urine on Rugs   Let me first give you a few facts on cat urine marking and cat habits before discussing the cleaning of cat urine on rugs. Before we go into the details of cat urine and its ammonia smell, it is important to note what cat urine is composed of. It is made up of different chemicals like urea, uric acid, and cretonne. You will even find the presence of some electrolytes in the urine. The cat urine contains other waste chemicals as well as bilirubin, ketones, n...