Annoying and potentially dangerous, mosquitoes are small winged insects that carry disease and inject chemicals that cause you to itch. They thrive in heat and humidity and are out en force in rainy, summer months. They will travel up to 65 kilometres just to bite you, and their mouths are designed to slip right through your flesh! Wear insect repellent on your clothes as well as your skin when you are outdoors to avoid being bitten.