Getting rid of insects
There is not a real good short-term solution for dealing with mosquito's. One solution to help in the long-term is to make sure there is no standing water in bowls, buckets, etc, around your property. This serves as a breeding ground for mosquito's. For your party using the citronella candles and placing them around the outdoor activity area may be one of the best repellents. The following website has a publication on mosquito's, from N.C. State University Entomology Department, that may have some good control tips.