If you are like me, you've probably wondered if the blue cleaning chemicals they add to the toilet tank do anything to the plumbing. Assuming it is more than just a dye, what impact do these chemicals have on the inside guts of the tank?
While discussing the cleaning agents with a chemist for a large cleaning chemical company, he stated that the blue is merely a dye. He contends that you could make the cleaning agent any color you want. But can you imagine the response when a person went to urinate into red water and watched it turn orange. Blue is more of the acceptable color associated with clean water, hence, the selection of the dye.