I absolutely adore this air freshener system. With pets in the house I don't feel comfortable with lit candles. The pura device plugs into your outlet and you can control it via your phone. It let's you create schedules and even has a night light. You can order the scents from their site and even set up recurring shipments and save some money. They partner with companies like Nest, Brooklyn Candle, and Apotheke for their scents. So good!