Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Easy, mess free, and safe

I've seen a lot of complaints concerning fine metal "powder" along the rim of cans; however, I have not seen this after some use. What I have seen is an easy to use tool that removes lids without leaving a sharp edge for your finger to become cut on that works every time. Even cans with dents at the lid have been able to work with this opener. For fun, I even removed the new easy pull-type lids, found on many cans of Campbell's soup. This thing is effective and useful and should replace everyone's archaic can opener.