These Household CFL light bulbs will save you energy and money. They last up to 10.000-hour and start quickly for convenience. These energy saving bulbs are great replacements for standard incandescent bulbs in an energy-efficient, cost-effective solution. They last up to 9.1-year on average with 3-hour uses a day. These bulbs are not dimmable and should not be operated on dimmer switches or dusk to dawn fixtures. Ideal for your table lamps, sconces, totally-enclosed outdoor fixtures and other general lighting applications.