Don't get us wrong, stainless steel cutting boards have their merits. On a maintenance note, they're easy to keep clean, and don't hold onto stains as fiercely as plastic boards. They also don't require regular seasoning, which is a major convenience factor over wooden boards. For aesthetically-minded home cooks, they perpetuate a sleek, contemporary vibe sitting on the countertop. These boards are made from food-grade stainless steel, often 304 steel, the material used in professional restaurants and hospitals.
Few kitchen tools are more essential than good knives. However, it's the nature of anything used so regularly that, eventually, it'll wear down past the point of effectiveness. At some point, you'll have to get rid of some kitchen knives to make room for newer ones in better shape. The question is, how do you properly (and safely) dispose of kitchen knives?