The Bounce Dryer Bar is a fantastic product.  I will have to admit that I had my doubts at first. I thought it was a gimmick, and I thought that it was not an effective fabric softener.  I was so wrong.  After receiving the bar, I followed the simple installation instructions.  It smells great and I no longer have to use messy liquid fabric softener any more.  I have actually forget that it is in the dryer until my clothes come out smelling so nice.  I will most definitely use this product and recommend this product to all of my family and friends.  I can not vouch for its durability...