How do you handle chants?

[heyblue]

How do you all handle teams that chant?

For example, there is one team in particular that when they are on the field they chant "hey batter, batter, listen to us chatter...baaaaaaaa". Then when on offense, they have one for the pitcher: "Hey pitcher pitcher...." These are younger girls 10-12, but I do run into it in some older age groups as well. I was trying to find a rule to back me up when I tell them to they can chant to help their team, but they can't call the pitcher or batter by name because it could be a form of interference or USC. I've been told that I could use the interference rule or uSC, but how can you tell when it actually does interfere with the batter/pitcher or when it becomes USC? Do you all use the same rules or is there something I'm missing?

So far I've gotten away with what I tell them, but I know soon some coach is going to challenge it and say there's no rule against them referring to certain positions on the field.

Do you all run into situations like this and if so, how do you handle it?