Product review (5 stars): Very happy!
I was looking for a "Clean/Dirty" dishwasher magnet when I realized that my dishwasher front is plastic.  I read the reviews on this product and ordered two - one for my daughter and one for me.

The adhesive backing is very strong, and it is unlikely that it will ever come off.  However, I was pleasantly surprised that my husband was able to move it to another spot on the dishwasher when he didn't place it correctly the first time.

It works as advertised.  It requires a little effort to slide it back and forth, but it's certainly no big deal.  It looks like it's a part of my dishwasher.