I would discourage this behaviour. I have tried a "cow toe" which is on the side of the main hoof of a bovine as a major distraction. I would never use a bully stick or tendons as they are a choking problem for many frenchies. Keeping the dog active and unquestionably only storing shoes in a closed closet or shelf is the only remedy. Cant imagine your Louboutins being damaged at $1100 USD.