Consider This...
Choosing the right ingredient is only the first step to finding an insect repellent that is perfect for you. Think about the length of time you’ll be outside and the type of activity you’re planning. Length of protection ranges from two to ten hours, depending on the percentage of DEET in the product. Remember, the higher the percentage of active ingredient, the longer one application will last.
Understanding your activity level can help you find the best protection based on more than just time outside. Do you need a sweat-proof or waterproof formula? How severe will the insect conditions be?