At the present, I use compact fluorescent bulbs but I heard that there are one or more others out there since these came out.. Round shapes - perhaps with flat tops - and capital abbreviations in their name (maybe with an 'A').
I use regular old fashion light bulbs and my power bill is always below normal. Just got a notice a couple days ago saying so. They still sell and I have a lifetime supply. lol Sorry I couldn't help you other than that.
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