Man, do I love these! 3m sent me a package for my review. My wife wants lights everywhere at Christmas and with a vinyl sided house, ever nail or hook could be an opportunity to ruin the siding. Command hooks hold the wire safely with enough tension to make a straight line so it doesn't look sloppy. 16 hooks and 20 strips is generous for the task though you'll probably want more than one to do the trick. One thing 3m, I wish you included an alcohol prep pad. That would be real handy.