Propane Genie replenishes propane provisions by delivering freshly topped-off tanks. Gas-grillers schedule deliveries by visiting the company’s website, where a prompt asks them to enter their zip code and pledge their allegiance to coal-less cooking. Overanxious tanks are then placed on doorsteps or given a mild sedative while they wait to be replaced by a tamer tank. Propane Genie fills all of its tanks to capacity, ensuring fulfilling grilling sessions and preventing bun-only barbecues. For an additional fee, full tank deliveries are also available to customers without a tank to exchange.