I don't have any suggestions really - I haven't figured out anything that gets rid of mosquitos, so I've been keeping my daughter indoors. But I do have a warning.
My daughter is almost 2, and she loves to play outside. About a month ago, we sprayed our yard, and I thought it would be fine to let her play outside. She got eaten up with mosquitos, even though we had sprayed the yard. I put Campho Phenique on the bites, and didn't htink anything of it. About a week later, on a Thursday, my daughter started running a fever. The next day, she had a small swollen lymph node in her groin area, but I didn't really think anything of it - I just thought that it was swollen to fight off whatever was causing the fever. Over the weekend, it kept swelling and by Sunday it was huge. I took her to Children's Medical Center Monday morning, and they ended up keeping her for a week. She had to have surgery because the thing absessed (sp?) and it needed to be drained.
Just be really careful. She's still getting over this. The nurses and doctors I talked to said that they've had a lot of kids coming in with this, almost to the point of it being an epidemic. They're still trying to figure out what causes it, but they believe very strongly that it has something to do with the mosquito bites. It was awful, seeing my normally healthy active daughter, hooked up to an IV and having to go through surgery. Please, just be careful.