The Insect DEFEND Patch is 100% DEET free, safe and natural.Research has shown that thiamine (vitamine B1), the key ingredient in DEFEND actually helps reduce being bitten by mosquitoes and flies when it is applied topically to the skin. The thiamine-based formulation of DEFEND works with the body’s own chemistry to create an invisible protective “barrier” that shields the user from mosquitoes and other biting insects.

The DEFEND Patch contains no pesticides (like DEET) and is totally safe for use on children as young as one year!

* Effectiveness of the patch is related to the intake of alcohol and tobacco.