You bet it works. Buzz Off is a proprietary method of embedding insecticide (Permethrin in this case) into fabrics. Developed and licensed by a North Carolina company of the same name, Buzz Off technology is used by Ex-Officio (which has the most complete line), L.L. Bean, and other outdoors-clothing makers. Fabrics treated with Buzz Off dont merely repel insects. What really happens is that the bugs get within a short distance of it and simply drop dead. Ok, maybe not, but the stuff works.
In any event, bugs are bugs. So whether youre in Florida, Costa Rica, or Africa, Buzz Off will do a lot to ensure you dont get bitten. Given your circumstances, Id go for pretty complete protection, which might include Ex Officios Baja Long Sleeve Shirt ($84; www.exofficio.com) and Convertible Pant ($79) plus a hat, maybe the Buzz Off Tropicwear Sun Hat from L.L. Bean ($24; www.llbean.com).
You can supplement Buzz Off clothing with topical repellents that use deet or Picaridin, and that may be useful for your hands and head. Picaridin (www.picaridin.com) is new to many people. It has long been available in Europe and Asia and now can be found in products in the U.S. Its widely regarded as deets equal at repelling bugs, and, as a bonus, it wont sting if it gets in your eyes or melt nylon clothing. Cutter Advanced has Picaridin, and in Africa you may find a product called Autan, made by S.C. Johnson, which contains it as well.
Not everyone loves Buzz Off. Its active ingredient is a fairly potent synthetic derivative of a natural bug-killer called pyrethrin. So some people think its too strong to be worn by children, and that it might cause cancer in adults. But even if there are risks from wearing Buzz Off clothingand there is no concrete evidence thats the casethe protection from truly serious diseases such as malaria, West Nile virus, and Lyme disease well outweighs the risks.
Have a great trip!
Check out this years more than 400 must-have gear items, including a comprehensive section of womens gear, in the 2006 Buyers Guide.