Thyme, including red creeping thyme (shown), possesses excellent mosquito repelling properties. The secret is to crush the leaves to release the volatile oils. You can simply place crushed stems around outdoor seating areas or rub the leaves on skin or clothing. Burning thyme leaves also shows skeeters the door, providing 85 to 90 percent protection for up to 90 minutes. Lemon thyme, silver thyme, English thyme, creeping thyme—all types offer some degree of mosquito protection. Tuck them into pots, or use them to edge planting beds.