The most blatant of the many cons of working at this company is the very low pay grade you receive for the kind of work you do. Expect any additional training you receive to take weeks or months to complete, and expect it to be put on hold for long periods of time. Also be prepared for long, monotonous hours on your feet with no breaks and managers that don't care about you.
Going in I thought that rude donors would be the problem with this job but management is far, far worse. As to be expected in a manufacturing facility, the only thing they care about in the end is working their employees to the bone to get a maximum amount of labor out of them. Management at my center insulted and degraded every employee, including myself, at least once to a level any reasonable person would consider to be verbally abusive, and at times they did it to us in front of donors, or even to donors. Every manager I met had an elitist attitude and they show very obvious favoritism towards certain employees. In my case one of my managers had a very ghetto mindset and only showed appreciation towards employees with that same attitude. The rest of us might as well have been wearing slave rags instead of lab coats. In the end if you're not friends with management it doesn't matter how hard you work, how nice you are, how smart you are, or how long you've been working there, you can expect to get treated like dirt.