Why Does Dog Urine Stain the Lawn?

As with humans, animals have high levels of nitrogen in their urine. This high nitrogen can burn and kill grass.

The safest way to minimise urine stain is to:
Provide a gravel area and train your dog to toilet there; or
Pouring water over the urine immediately after your dog has gone. This will dilute the nitrogen effects.

Holistic additives that are fed to pets to reduce the urine staining can be detrimental to some pets, causing crystals or stones to build up in the bladder.