Stain washes off and stains your tile and grout!!!  You can see in my photo the shape of the corner stool, plus all the other grout is stained a yellowish/brown color.  This shower is BRAND new.  The white grout is less than a month old!  I loved this stool but am now so upset!  That all being said, Wayfair people have been VERY good to work with to get this issue rectified!