I was real leery about the "True Sharp" Power Rotary Blade Sharpener and finally bought one. Well, I love it. It works so well. Wish I would have bought it sooner. I can make my blades last so much longer. I can tell it will save me $$$ in the long run. I usually have to change my blades out frequently, but now they last such a long time. No more buying a 5 pack. And for getting rid of the used ones...I just stick them back in their original containers and tape them up and throw them out...same as everyone else.