Wear light colors. Dark colored clothing, such as blue jeans, are more attractive to mosquitoes. Avoid working outdoors before dawn or after dusk when mosquitoes are most active. You can reduce the number of mosquitoes around your home and neighborhood by reducing the amount of standing water available for mosquito breeding. If mosquitoes are annoying you, they are probably breeding nearby.
Stagnant water is the key.
Water remaining over 4-5 days can support active mosquito breeding in warm weather. Check household screens for rips or tears and that they are properly installed. Clean your clogged roof gutters regularly, particularly if the leaves from surrounding trees have a tendency to plug up the drains. Roof gutters are easily overlooked but can produce millions of mosquitoes each season. Dispose of tin cans, plastic containers, ceramic pots or similar water holding containers that have accumulated on your property.