If you're going to the Philippines, wait until you get there and buy the local product, it works much better.
We have stuff called "Rid" in Oz, which works well, and there's Aerogard too. Both help me a lot, and I am a martyr to the mozzie bites, let me tell you.
Last year they ate me alive - so bad I got an allergic reaction and had to go to hospital.
I hate the little bastards. You've got to make sure you coat yourself in the stuff, spray on your bald spot, and under your clothes. Cover your eyes and spray forehead, neck and chest.
I have to do this every night when I coach, as my sessions are all around dusk and the couple of hours afterwards.