Repel Insect Repellent Patch 4 Pack/PK - Protection Up To 48 Hours

No expiration date, not recommeded to use after 3 years of purchase date. Debug's natural vitamin b1 formula is deet free and containsno pesticidesso you can use it on children and pets. It's non-greasy, won't wash off or lose effectiveness in waterand can be applied in seconds without harsh chemicals or messy residues. The patch contains vitamin b1 (thiamine), which researchers discovered is a natural mosquito deterrent. Wear patch for 2 hours to get 48 hour protection.Many people use this item for survival, hiking, biking, work, school, camping, fishing, traveling, gift idea, recreational.Not limited to these. For men/women/kids.