I bought a Fiskars scissor sharpener long time ago...it's a little gadget with a flint stone or something of that time inside it...I run my scissors thru it every month or so, and my scissors stay sharpened and working great. I've had the sharpener for at least 10 years...don't know if they still make them or not, but it was relatively cheap (less than $5) and has lasted a long time.