Bug spray? You mean insect repellent as opposed to pesticide. In the USA we ofen use the words bug spray to mean pesticide.
All the below information is to avoid mosquito bites, which I detest. It's rarely serious but damned annoying. To get Malaria from a mosquito, a single mosquito would have to have bitten something else that carries it, then bite you. If you avoid getting bitten, the odds of getting Malaria go way down, and they aren't high anyway at this time. The mosquito population varies greatly by region, time of year, amount of recent rain, and government and resort efforts to spray the area with pesticide. Sometimes I never even see a mosquito for an entire visit, other times, I can't seem to avoid getting bitten. Nobody can say for sure how it will be when you visit.
Studies repeatedly show that products such as skin-so-soft that do not contain DEET (
http://www.tendercorp.com/deetqa.html) do not work for most people. You need a product that contains DEET, the active ingredient in OFF!. Repellent containing DEET is readily available if you forget, but you'll pay resort or tourist town prices, which can easily be double or triple what you'd pay at your home supermarket or drug store. Since some people feel DEET in strong concentrations can be harmful to children, there are alternatives such as Natrapel (
http://www.tendercorp.com/natrapel.html).
Since its not practical to cover yourself from head to toe with repellent when you sleep and mosquito nets need to be hung from something, if you've got mosquitoes in your room, I'd recommend picking up a can of pesticide and spraying the room before you go out to dinner for a few hours. A local brand ByGone works well.
I've tried bug lights. First, battery powered units and then I brought a full power 1/4 acre pool bug light, figuring it would kill the 2 or 3 mosquitoes I couldn't seem to catch but would ultimately bite me overnight. Trust me, they don't work.
Wear long pants and socks starting just before sunset and especially to dinner if dining outside, as most resort and many restaurant dining facilities are.
Finally, if you get bit, a weak solution of Ammonium Hydroxide (common name is Ammonia used in washing clothes) applied directly to the bite works wonders to stop the itching. There is a product called Afterbite (
http://www.tendercorp.com/afterbite.html) that contains Ammonium Hydroxide in a convenient stick applicator that I always carry and for me, it works REAL well, eliminating the itch in seconds.
1/15/00
Jim Hinsch JimHinsch@CSI.COM