I used two of these within a few days of receiving them. The first lasted about five days and just stopped working. The second lasted a few days longer. I received them less than two weeks ago and have already used 2/3 of this pack. I thought they were supposed to be energy efficient, but I just think of all the energy that is wasted producing this garbage, transporting it across the country, and then throwing it away. In Progress. They certainly didn't save any energy in the five or six days they lasted. Update: I bought them on May 23, 2018. Today is October 20th, 2018 and I just installed my latest one. Most lamps burned out after a day or two. My fifth lasted three times. I was lucky and had the last about 4 months. We'll see how long the last one lasts, but I'm not optimistic based on past results. I really advise against buying these.
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