Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Great, for the VERY SHORT time they actually work

Bought these on Sept 18th. They worked great, just what I needed. But the one bulb blew out a few days ago (Jan 9th I believe). Ok, so maybe that was just a fluke. I put the other bulb in and said to myself, "Ok, let's see how long this one lasts". Well, I already have an answer for you: not even a week. I just had to replace it with some other's I ordered when I used the second one in this package. So the scoop is, DO NOT buy these bulbs. I gave it two stars because for the 3.5 months the first one worked, it was great. But for TWO bulbs to blow out so quickly, it's not worth the money, time and effort to order these.