To try to remove urine deposits in your toilet bowl, please proceed as follows:
Put about 100 mg of citric acid (available at the drugstore) in a full pot of lukewarm water.
Leave there for a few hours.
Then flush and rinse well!
After this continue/start with the use of the Aqua Rinse Spray for maintenance. Aqua Rinse Spray leaves a film layer in the toilet bowl for protection and improving the flush.