I have tried 4 different types of glues and have had better success with metal shoes staying on when glued. I have tried these 4 different times and they last about a 5-6 days and come off. I will not be using them again. Great concept and I was very excited but $70- $80 in cost for front shoes means the customer is paying $150+ for shoes that only stay on a week. Not a good business model.