Don't Bite Me! Patch is a revolutionary new product in insect protection! The active ingredient, Vitamin B1 is the NATURAL repellent that keeps the bugs away. The Vitamin B1 is absorbed into the bloodstream through a natural trans dermal patch that is applied directly to your skin. When applied two hours before going outdoors, the Don't Bite Me! Patch is effective for up to 36 hours! The patch is DEET FREE, waterproof and safe for use on children. No messy sprays, lotions or towelettes - just apply directly to your skin, and leave on for the desired time of coverage.