This is a rule that I always find difficult to enforce. Since switching into contracting mode, I am often at any particular studio once per week or less. It seems to me, no matter what signs are posted or what words are spoken, the DJ seems to hear; “It is okay to eat and drink in the studio.”
Of course, with that attitude, the inevitable is bound to happen:
To make things worse, this was spilled on the main mic on/off buttons. These button membranes come in groups of six and are not inexpensive. The complaint was “The main mic will not turn off.” Ah well, I am paid to fix things after all. The DJ’s are only inconveniencing themselves at this point.