So you know he did not stir it, even if he knew better and lost money when he had to replace it. Sounds like you only heard what you wanted from that conversation. He sold a lot of plastic for a long time and many brands and you are saying he was not carefull? Anyone that does this knows it need mixing before you use or repackages. Just because he used a drum pump does not mean it is bad. I still use one to this day.