Bought four boxes, they should last a year; I am not sure that they will. One box lasted me two months. But, no matter, They are easy to use and wash the clothes. I have had no issue with them not cleaning. So as far as I am concerned they certainly do the job. I had one packet non scented and they were just the same as the scented ones. I could not smell any thing with the scented. But, having said that my sense of smell is not that good. So to get full stars, I would have had to smell the scen...