I use these for handy reminders all over my apartment. Friends have joked that I have actually attempted to wallpaper my apartment in these post-it notes. The package is not lying when it says super sticky, I stick them on walls, doors, etc. remove them and re apply them and they stay. I have several notes that have been on my office wall for about 6 months that are in the direct line of a fan and they have still stayed adhered to the wall. Another "HOME RUN" Post-it Brand!!!