I have use liberty for many years. I started to use liquid 4-5 years ago. If I would have poor control at times, the rep would ask what I use. I would say the liquid ams. He would say that's the problem, not enough stuff in it.  Then I got an old jug of the liquid ams out, and asked not enough of what stuff are you talking about thats on or not on the label? He had no idea of what it was that was lacking. So now I do double up on the liquid ams to get twice as much stuff that must be so important to make Liberty work.  I dislike the granular ams because of the rust I get on my equipment when I use it.     I just got done hand spraying Liberty around the yard. Weeds and grass to tall, no ams, but still kills everything that gets sprayed.   I do sometimes wander if ams is really needed but unwilling to find out on my fields.