I don't know what's wrong with these lightbulbs, they just don't last long. I change them very often, regardless of the brand. I only get a few months from them with light usage. I'd say 2-5 hours a day max (depending on if I forgot to turn them off) and the max lifespan is around 6 months. I have no problem with other types of lightbulbs, they are just terrible for life.
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