“The motion to strike is considered a “catch-all” motion, covering those items not subject to demurrer, such as a word, a phrase, a portion of a cause of action or a prayer for damages; however, it is not a substitute for a demurrer. A motion to strike reaches defects in a pleading that are not subject to demurrer. For instance, the claim that a pleading fails to state facts sufficient to constitute a cause of action, which is a ground for a general demurrer, is generally not a proper ground for a motion to strike. The motion to strike can also be used to strike an entire cause of action or “pleading,” including complaints, cross-complaints, answers and demurrers.”
[California Summary Judgment & Related Termination Motions [certain citations omitted]]
