I have a serious problem with edge blisters on my big toes and, for years, have been trying to deal with them by taping my toes but that only helped a little. I was so happy when I found Rebecca's website explaining what would..and would not, help the problem. At first I just bought a small package of Engo Blister patches and found they definitely helped. But since I live in NYC and walk EVERYWHERE all the time in addition to hiking on the weekends, I needed the patches in many pairs of shoes so I was thrilled to find the large packs of 30 patches. I do have trouble putting the patches in the correct spot on the sides of some shoes--especially water-proof hiking boots, thus I am giving them 4 stars instead of 5, for now. Thank you Rebecca for all of the great advice you offer on your website and videos.