GP66 is an excellent bathroom cleaner. Besides its incredible cleaning performance, it doesn't contain anything like bleach, ammonia, or phosphates. If you are considering using something that is water-based and NSF approved, give GP66 a try. GP66 also acts as a whitener.
Step #1
Spray GP66 Miracle Cleaner in and all over urinal, toilet or sink.
Step #2
Scrub lightly.
Step #3
Rinse with water.