Karomatherapy-Refill Pads Appetite Control Grapefruit & Fennel Aromatherapy. A new you is waiting to drive off those pounds! Grapefruit and sweet fennel essential oils are known to curb cravings for sweets and to stave off hunger. Experience the benefits of Aromatherapy on the road! INCLUDES: 5 aromatherapy refill pads. Use with the Karoma Car Air Freshener Diffuser. Suggested to replace scent cards every 2 weeks.