I bought four boxes because we have a very large Christmas tree and we wanted to have a lot of dancing lights. I was so excited, the first box was perfect. There were a couple of broken lanterns in the second box, but I wasn't too concerned about that because I understand that things like this happen. In the third box, only half the filament caught fire (and we've checked every bulb and fuse and can't understand why only half the filament is lit), and the fourth box keeps going out. It willโฆ