When it comes to abrasives you want something tough to tackle those stubborn stains, yet delicate enough not to scratch glass. Aside from the usual dirt and stains, you can run into dried bird stool, leaves, and other obstacles stuck in either the window sill or the glass surface. The problem with using ordinary household abrasives is it is very easy to leave scratch marks. XERO, Unger, JFlint, Maykker, and World Enterprises all offer a great selection of abrasives. Explore white scrub pads, walnut scrub pads, steel wool and so much more! You can also shop our line of Abrasive Holders for a complete setup.