That and they often times burn out faster than traditional bulbs.
And check out these hazmat rules should a cfl break:
http://www2.epa.gov/cfl/cleaning-broken-cfl
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Comparison chart
LED vs Incandescent vs CFL
http://www.designrecycleinc.com/led%20comp%20chart.html
That’s because they are designed to be turned on and remain on a minimum of 30 minutes after. Every fluorescent light I’ve ever used the same as an incandescent light has burned out in the same, or less, amount of time.
For example, we use light sticks in my workbench area. In the beginning I found they generally lasted six (6) months or less. After some time, I started leaving them on, even when I left the room for a short while. Since then, they last, well, seemingly forever. I’m still using those last purchased six years ago. Now my wife has instructions to leave the one over her washing machine area on until she is finished for the night. That one has lasted almost as long as the ones over my work area.
We only use the cfl bulbs where lights remain on generally over a half hour. Incandescent lights are used elsewhere although we are switching those to LED lighting here of late. They may be expensive but they do last longer and become cost effective over time.
And if they break you are exposed to toxic mercury vapor.
I thought Parks was going to reverse the manufacturing ban on incandescent bulbs if Boehner made him head of the EPA committee?