I've been using my Bounce bar for about a month now, and it will easily last me several more weeks.  I like the convenience factor, and I like not having to find the dryer sheet hiding in the sheets, or under the washing machine.  One time the bar came out of the holder, but it went back in easily, and has stayed put.  

My only concern is whether or not the holder will remove easily should I decide to change back to the sheets.  The main reason I would consider doing so is that the Bounce bar doesn't leave much of a scent on the clothes and bedding.  Soft and static free, yes, but I would...