Disposables are regarded as consumable items. There is no return on disposable devices. You and I have no control of how that device is used once it leaves your store. Also from a hygiene perspective in this day and age, it is impossible to test. It is not putting the blame game on the customer but the variances in how one uses e-liquid, pods, coils and disposables is drastically different. The way a customer uses a device will influence battery life, liquid usage, and coil life. We have staff that use two pods a day and others with pods that last a few days. So please explain to your customers, put a sign up in-store and add to your website that there is no warranty on disposables once it leaves the store. We all want our customers to be happy and letting them know upfront on the policy avoids any issues. Devices dead in-store or leakage in sealed packaging is a total different scenario and will fall under warranty. Those devices would need to be shipped back to us along with your order number for us to evaluate and would then be credited to your account.