Here is a great list for almost every buggy need: http://www.ewg.org/research/ewgs-guide-bug-repellents?inlist=Y&utm_source=201307bugspraygmail&utm_medium=email&utm_content=first-link&utm_campaign=toxics
Legacy can personally vouch for Bug-X Spray from North American Herb & Spice and at the Training Table in Legacy Center. It works on mosquitos and pesky flies!