Care Plus Icaridin 20% can be used on adults and children from 6 months and older. In Contrast, DEET 30% is not recommended for children under 12 years. Long Lasting: Care Plus Icaridin 20% lasts up to 12 hours for mosquitos and ticks and 10 hours for black flies, DEET at 30% concentration lasts up to 6 hours. Gentle On Your Skin: Care Plus Icaridin 20% is less irritating to skin than DEET