How to make them last longer and eliminate rusting
When you purchase a box of steel wool pads, immediately take a pair of scissors and cut each pad into halves. After years of having to throw away rusted and unused and smelly pads, you'll decide that this will be much more economical. In fact, you'll notice that the scissors get sharpened this way!
Plain steel wool pads, which are NOT filled with soap are kosher. Steel wool pads which are filled with soap do need kosher certification. Use steel wool to:
Rachael Ray's steel wool tip: Watch this video to prevent steel wool from rusting.
One kosher brand of steel wool soap pads is Gefen Steel Wool Soap Pad (certified OU-P).