Ben's ears stood nicely on his own. But one of my Sadie's ears was not up at 10 weeks. So I went to the store and bought the Breathe Right Strips and the Eyelash glue to glue the strips inside the ears. It won't hurt them with the eyelash glue as long as the ears are shaved.
I had previously shaved the top third of her ears. So, the day I bought the strips I shaved the rest of her ears. I figured that was enough trauma for one day and I would use the strips the next day. Next morning -- both ears are standing up nice and perky!
I think it is worth it to help their little ears if they need it. As it turned out, my girl only needed the rest of the hair off her ear for it to stand. But even if she had needed the strips, I would have used those. It is just helping them with their styling.