The Babysitters

This is something I`ve always wondered about...
In SP, Simba puts his faith in Timon and Pumbaa to watch Kiara and keep her out of danger. It is however a running joke in the movie that they time and time again fail at this task.
So I`ve always wondered why Simba keeps letting these two watch his daughter? Especially considering how protective he acts?
Of course he or Nala can`t watch her all the time, they have a kingdom to run.
I also get the impression that Simba wants Timon and Pumbaa to be sneaky, stay in the background, watching Kiara without her feeling that she`s being watched, you know?
So my question is, why doesn`t Simba ask someone else to babysit Kiara?
In SP, Simba puts his faith in Timon and Pumbaa to watch Kiara and keep her out of danger. It is however a running joke in the movie that they time and time again fail at this task.
So I`ve always wondered why Simba keeps letting these two watch his daughter? Especially considering how protective he acts?
Of course he or Nala can`t watch her all the time, they have a kingdom to run.
I also get the impression that Simba wants Timon and Pumbaa to be sneaky, stay in the background, watching Kiara without her feeling that she`s being watched, you know?
So my question is, why doesn`t Simba ask someone else to babysit Kiara?