Lifesystems Expedition Tick DEET-Free Repellent 25ml is a compact spray that provides 10hrs protection per application from ticks. The spray is DEET-free and made using Saltidin, scientifically-proven to repel ticks and other small insects. Keep ticks away this summer with the pocket-sized Lifesystems Expedition Tick DEET-Free Repellent. Compact 25ml spray Pocket sized and easy to use Deet-free Contains active ingredient Saltidin Targeted protection from ticks