Hi ya, my kids 10. 7, and 2 aren't on anti-malarials. We just use aero-guard mozzie repellant and make sure the kids cover up. We've been in Pom for 1 year now, and unfortunately I am the only one of us that has gotten malaria. Bed nets are great - as long as you don't have a fan above the bed!! But the flip side - is that mozzies don't like the breeze - so the fans stop them. All our windows and doors in our compound have screens as well. If you go to mine and my wifes blogs (in the blog section here) and want to make contact - please do 
cheers
Aaron