HiClean Natural Mosquito Repellent is Better than Synthetic Repellents Such as DeetIt's Natural:Citriodiol, the active ingredient in HiClean Natural Mosquito Repellent, is plant-based and naturally derived from Lemon Eucalyptus Oil.It's Safe:Citriodiol is minimally absorbed through the skin while DEET is absorbed rapidly and can cause skin problems and allergies. Therefore, Citriodiol can be used on children as young as 6 months and pregnant women while there are restrictions to use DEET.It's Effective:Efficacy data shows that Citriodiol is as effective as DEET without the associated problems because the resistance of Citriodiol has never been seen with mosquitoes however, it has been reported with DEET.