• When purchasing CFLs read the package carefully to match the bulb to the fixture. Not all CFLs can be used in enclosed fixtures or wet locations.
• Use CFLs in the light fixtures that are used for the longest periods and at least 15 minutes at a time to avoid shortening the bulb's lifetime.
• There is a variety of styles of CFLs on the market, including the common spiral shape, A-line, chandelier, globe, reflector, three-way, and dimmable bulbs.
• We recommend that you purchase CFLs that bear the ENERGY STAR® logo, which means the product meets federal energy efficiency guidelines. Also look for the UL® mark, which indicates the product meets the safety guidelines of the Underwriters Laboratories.
• Check the wattage of the incandescent bulb that you are replacing with a CFL. Purchase a CFL whose package says it is equivalent to that same wattage. You can also check the lumen rating on the package. The higher the lumen rating, the greater the light output. Refer to the following chart to see how much more energy incandescent bulbs use than CFLs.

CFLs contain a very small amount of mercury and should be used and disposed of properly, ideally recycled. The amount of mercury is 100 times less than the amount used in older thermometers.

Screw and unscrew the CFL by its base and don't forcefully twist the CFL into a light socket. Dispose of used or broken CFLs inside two sealed plastic bags. For detailed cleaning instructions for broken CFLs refer to www.energystar.gov.

Unbroken used CFLs can be recycled at participating Home Depot stores. It is best to call ahead to ask whether a particular store is offering the recycling program.

You can also purchase recycling kits called RECYCLEPAK® containers online at www.prepaidrecycling.com. The consumer kits, which can recycle 6 to 12 CFLs depending on size, are for residential use only. Each kit costs $22.95, which includes shipping and recycling fees.