I just tried this product by Pledge to dust my porcelain tile hearth and it did a good job using a yarn head dusting mop.
(broken link removed to http://www.pledge.com/en-US/Products/Pages/specialty-surfaces.aspx)
I picked it up at a supermarket and it made dusting the hearth a 5 minute job!
Ray
(broken link removed to http://www.pledge.com/en-US/Products/Pages/specialty-surfaces.aspx)
I picked it up at a supermarket and it made dusting the hearth a 5 minute job!

Ray