I had used bleach to whiten the grout on my shower floor before but didn't have a good way to make it cling to the walls to whiten the wall tile grout too... Well the Clorox bleach pen solved those problems. I traced the grout with the pen, let it sit, scrubbed a little and it was like new after!

Before and after pictures  http://alilknowhow.com/?p=75

I bought the pen at Wal-Mart just to test it out because my grout was nasty.. In the past I had used other "tile" cleaning products, and while the tile came out amazing, the grout was not as clean, and sometimes just left as a yellow color. The Clorox bleach pen brought it back to perfectly new white color. I was very impressed. It required very little scrubbing to do its job too! My shower gets nasty fast because my bathroom doesn't have a vent so the shower doesn't dry out very fast, usually there isn't time for it to dry even between showers! So it needs to be cleaned frequently, and the less work I have to do to clean it, the better. Well the Clorox bleach pen definitely made easy work out of all the mold and mildew that builds up after just a month. I highly recommend it.

Recommended: Yes