The Thermacell Mosquito Repellent Refills 2-Pack provides 72 hours of protection against mosquitoes, both indoors and outdoors. This liquid repellent comes in a blue color and is designed to deter pests effectively. Made by Thermacell, a trusted brand, these refill bottles are pet-safe, odorless. With an EPA registration number of 71910-11, this environmentally friendly product is perfect for outdoor activities and camping adventures. Made in the United States, this refill pack ensures long-lasting bug-free enjoyment.