Shuriken Particles - how to start and stop emision?

Simply put: how do I show and hide particles… or start and stop them?

Normally, I’d just enable/disable the mesh renderer, but I can’t seem to drag a script on the Shuriken Particles object. What should I do?

using UnityEngine;
using System.Collections;

public class shuriken : MonoBehaviour {
//if u rename the script u have 2 rename "shuriken" too or else ull get errors
//dragg the script here .. 
public MeshRenderer MeshRendererScript;

//if u press E u toggle the shuriken on and off..just so u get the idea..that it works 
void LateUpdate(){