How often do cops do undercover stuff?

Question

like pretending to buy or sell drugs and have other officers arrest them, picking up prostitutes, and things like that? do you have a cop for certain amount of time before you can take part in this or is it up for anyone? and what about house raids? thanks to all who answered.

Answer 1

Doing undercover work is a division within a police department. The time worked varies on what kind of case is it.