Good answers about the benadryl, and to watch the level of deet your child is exposed to. Thought I'd add a few thoughts, even though I've answered too many questions today already.
1) Mosquitos are attracted to nice scents. Try changing your child's shampoo or soap, so she doesn't smell so yummy! I use only baking soda to wash my hair - no scent at all.
2) wear long-sleeved shirts and long pants, in light colors. Americans feel that they have to expose their skin to beat the heat, but those in really hot countries do the opposite. Dark colors attract mosquitoes. Light, course fabrics make it harder for them to bite you.
3) Use a fan. Mosquitoes don't bite on windy days. They avoid the breezes.
4) Eliminate mosquito breeding grounds around your home. They like stagnant water. Don't think just ponds - even a piece of litter will breed the bugs if it has stale water in it.
at 11:45 PM on Jun. 17, 2011