Mosquito's are by far the most annoying. They even have an effect on my lifestyle, cos I'm a mossy magnet !!!. They stop me from enjoying glorious sunsets during summer, where I live, cos i can't be dealing with the itching and scratching of their bites for days afterwards. It's not uncommon for me to receive say 5 bites, for staying out during a summer sunset, even if i've taken anti-insect deet precautions. As soon as dusk comes in, I'm like get me indoors to avoid getting attacked. I wish they'd make some kind of chemical that would kill 'em all.