WFMW: Backwards edition!

Shannon over at Rocks In My Dryer is hosting a backwards WFMW! Rather than sharing tips and ideas we get to ask questions that are plaguing our minds.

Important things like, Should I Eat Another Cookie? Does Your Child Burping His/Her ABCs Qualify As Talent and Why Does Gas Cost So Stinkin' Much? Are not things you'll likely get an answer for, but maybe, just maybe you'll find out how to organize your DVDs.

The question I have is cleaning my shower/tub.

Living in Georgia I'm prone to have red clay throughout my house. I can get it out of my carpet and clothing, but for the LOVE OF GOD and ALL THINGS HOLY I cannot get it out of my textured shower/tub!

I've tried cleaning with a scrub brush, tooth brush, cloth, Mr. Clean's Magic Eraser and a sponge, but I can't seem to get the red clay out of the grooves. I've tried using Pinesol, Bleach and Oxy! Fantastic hoping it would bubble and agitate the heck out of the clay; thus bringing it to the surface.

Someone, please, please help! It's driving me crazy.