Important messages warrant repeating. Repeating often enough makes it a cliche. When it becomes a cliche, people start to ignore it. Repeat the cliche often enough it falls off the radar. Since the important message has fallen off the radar, it is worth repeating. And the circle of life continues.
So, cliche or not, even at the risk of sounding like a broken record, keep repeating important messages be it at work or at home.
Consistency is a key component in communication to get the message across.