Give the old rusty knife some
Give the old rusty knife some air, sun, or both and you will never have to worry about it.
Only throw it away if you let a barefooter with hepatitis borrow it to complete their own surgery.
On second thought, no need to part with it even then.
Just package it as bio-hazard waste, ship it to me as such, and I will autoclave it for you.
For less than a few hundred dollars in shipping and handling costs we can save your trusty instrument.
On second thought, Bard Parker disposable scalpels are pretty cheap.
Maybe we could even get BRS branded models!