What are the disadvantages of CFL

~~Disadvantages of CFLs

Unfortunately, CFLs have their share of disadvantages and limitations. Most of them stem from the fact that not every bulb is suitable for every job, so it is more a matter of finding the right match. The only real disadvantage as far as I can see is the mercury content.
•While CFLs are supposed to last about 10,000 hours, turning them on and off too frequently can reduce that lifetime substantially. They are unsuitable for places where you would turn on the light only briefly. These bulbs should be used only where they will be left on for a while without being turned on and off frequently.
•While you can buy CFLs for use with dimmer switches, be aware that not all CFLs can be used with them. Check the package before using. A regular CFL not meant to be used with a dimmer switch can burn out quickly. The same applies to using CFLs with timers.
•CFLs when used outdoors need to be covered and protected from the elements. They are also sensitive to temperature, and low temperatures can cause lower light levels. Check the package for suitability for outdoor use.
•CFLs are not suitable for focused or spot lights or where narrow beams of light are required. They are meant only for ambient light.
•Maybe the most alarming thing for environmentally conscious consumers is the presence of mercury in CFLs. Mercury is a toxic metal, and while it doesn't pose any danger when the bulb is being used, it may be released if the bulb is broken, or if disposed incorrectly. These bulbs need to be disposed off very carefully. See here for instructions on how to dispose of CFLs responsibly.