... *3.7cmEach Insect Repellent Patch contains 75mg of Thiamine, a natural vitamin, this works with the bodies own chemistry to ... create an invisible barrier that shields from biting insects. The Insect Repellent Patch is ideal for holidays, fishing, gardening, BBQ's ... Adults from mosquitoes, midges and other biting insectsOdourless, Attach the patch on your clothes.Non Greasy and undetectable when worn ...