Is it safe to use thermacell repellent which contains allethrin?

Thermacell repellent, which contains allethrin, is generally considered safe for outdoor use when applied according to the manufacturer's instructions. Allethrin is a synthetic version of a natural insect repellent found in chrysanthemum flowers, and it is designed to repel mosquitoes and other insects without direct contact. However, it's essential to ensure good ventilation and avoid prolonged exposure to the repellent, especially for individuals with respiratory issues or sensitivities. Always check for specific guidelines and warnings on the product label.