When it comes to disposing of kitchen knives, the answer is yes. You can always place them in the recycling bin, but it's important to check with local recycling companies to see what types of materials they accept. Your knives will then be added to your trash can, where they will be melted and recycled. If you're not sure how to dispose of general-purpose knife blades, take them to a local hardware store or scrap program.
They may be willing to take them out of your hands as long as they don't have a price. Alternatively, you can donate the knife to a local company, such as the Salvation Army. You can also buy knife disposal containers or create your own from everyday containers. To do this, look for a piece of cardboard that is longer than the knife blade and is more than twice the depth of the blade with an inch (~3 cm) or more to spare.
Fold the cardboard in half and place the blade so that the back of the knife is against the fold. Secure it with adhesive tape. It's important to check multi-purpose knife blades regularly and sharpen them when necessary. This will help ensure that they are safe and effective for use.