To use Urban Drones promo codes, follow these steps: 1. Choose a promo code that fits your needs. 2. Start shopping by clicking on the code to be redirected to Urban Drones's official website. 3. Look for the "promo code" box during checkout and carefully enter your code. 4. Enjoy your savings and continue with the checkout process. Remember, each promo code may have its own terms and conditions, so make sure to read them before applying the code.