The Thermacell Refill Value Pack includes a 4-butanecart and 12 mats, providing 48 hours of insect repellent power. This product, manufactured by Thermacell in Mexico, is EPA registered and specifically designed for outdoor use, making it an essential item for camping and hiking adventures. With its proven effectiveness and long-lasting formula, this refill pack ensures that users can enjoy a bug-free experience in the great outdoors for an extended period of time.