Cleaning Tubs, Toilets and Sinks – This is a fun one. I tried it and didn’t think it would work, but it does.
1. Use a Large holed “salt-shaker” style Tupperware of Rubbermaid container
2. Fill it with Baking Soda and dump in a couple table spoons of Salt
Then use it like you would scouring powder. The salt helps as an abrasive and the baking soda is much easier on your plumbing as well. If you are partial to bleach, put 2-3 parts water to 1 part bleach in a spray bottle and you will fine.
there were a few other things mentioned in that post, but i thought this one was particularly interesting. if folks are interested, i would post the link.