Natrapel 12-hour's DEET-free formula provides 8+ hours of protection from biting insects and ticks. It's about time - a DEET-free insect repellent that really works! Natrapel 12-hour provides 12+ hours of protection from biting insects and ticks, thanks to its CDC-recommended 20% Picaridin formula. Unlike ineffective DEET alternatives, Picaridin is the only formula that consistently shows equal or better performance than DEET in independent, clinical tests. Even better, Natrapel 12-hour is completely safe on gear and will not melt jackets, fishing line, and other synthetic materials. 3.4 oz. size is TSA approved for carry-on, and provides protection for the whole group!