Starting up processes with a window service

I am asking a lot of questions today, but that because i know that you guy's are the best.

开发者_运维知识库To my question, we have built a window service that starts all of our self build applications in our servers. we are doing it by

foreach(var path in paths)
{
  Process p = new Process(path);
  p.Start();
}

now.. should we recycle all of the Processes once a day? and is t more "right" to give each process an 'appDomain' of its own ?