how to remove tut noises in presentation?

Hi there,

I have a presentation were the speaker is constantly making a tutting mouth slapping noise every 10 secs during his speech.

I was wandering if there is any way to remove this automatically in soundbooth?

There seems to be a function to "remove noise" however I dont think I am using it correctly or is not suited to what I need.

At the moment I have resorted the keyframe dropping the audio momentarily and then bringing it back up.

However the presentation is 15mins long

There must be a simpler way to to do this! :)

Any help would be much appreciated

cheers