REVISED: After I posted the review below, the seller reached out to me. I explained the problem and they promptly replaced my faulty bulb. I am pleased.I like these bulbs, but one of them is faulty. It turns on, but quickly goes out. The seller says to buy "with confidence" as the bulbs have a two-year warranty. It assures that concerns will be addressed within 12 hours, but in the past 10 months, I'm not clear how to contact them for a replacement. All three bulbs are needed in a hutch, so it'sSee full review