Once you have used your Dorco stainless steel double sided blades and you feel it is no longer as sharp as you'd like you simply swap it for another blade.
What do I do with the used blade?
I personally put our families (yes we all use safety razors) into a glass jar with a lid. I wait until everyone has used their entire package of blades before I take them to be disposed of.
Where do I take them?
There are several places you can take them. I take them to our local vet who disposes them for me.
You could ring your local GP - medical centre as they can dispose of them for you too.
Most cities have their own regulations and guidelines for eliminating razor blades. Give them a call!
You have eliminated so much waste buy using a safety. Congratulations.