O.k. Ladies. Rotary blades are considered a sharp. you can put them in sharp containers and then drop them off at your local hospital who will dispose of them properly. If they go in the trash, then they will go to the landfill. These blades don't decompose quickly and can stay there for more than a 100 yrs. That is someone else many times later down the road who can get hurt by them. I would like to see these blades be recycled in some way. So will do more research and see what I can find out.