Systems, devices, and methods for delivering selected amounts of scented, pasty wax mixtures for different applications of candle warmers, and compositions of scented, pasty wax mixtures which have extended fragrance lifespans. The warmers can include devices that melt the scented, pasty wax mixture, where the devices plug into vehicle accessory power outlets inside of vehicles or plug into wall power outlets or utilize solar power. The devices can include removable cartridges with or without sponges that can soak up the melting scented, pasty wax mixture to be disbursed throughout the space so that fragrances pass into the spaces. The scented, pasty wax mixture can include therapeutic essential oils to be dispersed throughout the spaces in high enough concentrations to provide the desired therapeutic availability.