Product review (2 stars): Worked for a bit, then didn't
These worked great for about 9 months, then failed.  Not sure if it was extremely cold, dry air here that affected them, or maybe my poor inks talkathon, but I followed instructions quite closely.  Another answer could be that my granite counters have a texture of sorts where they would affix, and that may explain the failure to properly adhere.  I am ordering news ones, though, so any port in a storm I guess?