That you don't want to work with them under certain circumstances?
I have been doing some product photography work with a client for almost a year now, to our mutual benefit. However, I don't have a studio and I usually go to his office. For our last shoot, however, we went to his house. It seems to be a permanent party, which I have no real problem with in and of itself (even though I was trying to work). BUT, there were a variety of illegal things going on that I want no part of.
How would others here handle this?