Old external hard drives
So I have two or three external hard drives that I used at various times... What's the best way of getting rid of them? I don't even know what's on them. I can hook them up to my current PC and delete things but what do to after that? Can they be recycled without risk of anyone getting access to whatever what on them? for example if one of them had a tax return on them... (this is why I kept them and never did anything with them I wasn't sure what to do with them). At least one of them may have become corrupted and not useable but I'm not entirely sure.