Make sure your lights can handle them. I bought some energy saving bulbs, stuck it in an enclosed dome. After several months it exploded and smoked! Read the box that you aren't supposed to put them in enclosed lighting fixtures.
Can't be true for all CFCs because I have them in enclosed domes all over my house and they have been in there for about a year and a half and have yet to have any problems.
I also don't see why they couldn't be in enclosed domes as they obviously generate almost no heat which I would think is the problem with enclosing bulbs of any kind.
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