I'm a college student who uses command strips for everything! I've finished 3years already and have bought more than 30 refill packs. I use them on posters, to hang mirrors, and white boards. They are the only thing that will keep my mirror up all year without having it fall. They are strong enough but gentle enough to not tear the paint down so Im not fined in the dorms for ruining walla. Command strips are one products I will sepend the extra money on every year!