I put mine in a Lysol wipes container with needles & such & dispose when needed. I have also used a small plastic laundry detergent bottle when I had a lot of needles due to my dogs diabetes. But after she passed I use a smaller container. I tried several years ago to sharpen them but the sharpener I bought was worthless so I don't even bother with that anymore. I haven't heard anything good about any of the newer sharpeners either so I feel it is just a waste of money