Avon has some new products that contain picaradin. Not as smelly as deet and won't melt things.
It's much better than the old Skin So Soft stuff, and lasts longer. They also have a few that contain sunscreen so you only have to put on one during the day. See www.avon.com
and look for insect repellants. Right now they are 50% off. I just stocked up for a Roatan trip!