battlearray_client/Assets/Scripts/Utils/DelayDestroy.cs

using UnityEngine;
using System.Collections;

public class DelayDestroy : MonoBehaviour {

	public float delay = 5f;

	protected float startTime;
	// Use this for initialization
	protected void Start () 
	{
		startTime = GameTime.time;
	}

	protected void OnEnable()
	{
		startTime = GameTime.time;
	}
	
	// Update is called once per frame
	protected virtual void FixedUpdate () 
	{
		if(GameTime.time - startTime > delay)
		{
			Destroy(this.gameObject);
		}
	}
}