Soooo.

I saw a couple things recently that supposedly will work.

For the commode: Pour a bottle of Coke in, stir it around let it sit for a few minutes, and the brush and flush.

For the shower: Use a dryer sheet. This was for the glass, but It ought to work on the tile as well.

My old trick of using the car polish is no longer good, since they quit making the stuff I used.