Anything with DEET in it. As allready indicated, the long term use of DEET could be potentially dangerous but long term in my view is years. I reckon it is better to use DEET for a few months, then getting a tropical disease.
Also lots of Mortein coils, and citrenella lanterns in the morning and evening.
Something people use, which is effectivea mixture of dettol with baby oil, a lot of people swear by it. I am not sure why dettol, as I think the main ingrediant that works is the baby oil, as it puts an extra layer on your skin. Personally I dont like smelling like a toilet, so I go for the DEET.