8 years in the bush, without any anti malaria tablets nor any other crap.Never caught it neither, thanks god. Use the net if you can, if not, spray the **** out of the room,with the junk you get onboard , and drink plenty of Scotch. I always leave half a glass of Scotch on the night cabinet, not to drink it during the night, but for the smell, mossys don't like alcohol smell. Always worked out fine, never got bitten by any mosquito in the room, only once by a big fking spider, which made me sick like **** .Maybe it's all dumb luck, but hey **** , worked so far....