How to disable trail renderer

To anyone who still has this problem in 2017. Use myTrailRenderer.Clear()

When you reuse the bullet set

 gameObject.GetComponent<TrailRenderer>().enabled=false; 

to disable the trail render.And on firing the bullet, set it to true.

The code I have so far. I wrote it by checking out someof the posts in the site. It look OK most of the time. But sometimes it does not work

     private TrailRenderer line;
     private float _trailTimer = 0.1f;
     private bool alive = true;
 
     private Vector3 movingDirection;
 
     void Awake()
     {
         line = gameObject.GetComponent<TrailRenderer>();
         line.time = -1;
     }
 
     // Use this for initialization
     public virtual void Start()
     {
        
         gameObject.renderer.enabled = false;
         trans = gameObject.transform;
         spentLife = lifeTime;
 
     }
 
     public virtual void Init(CreepAI target, Vector3 startPosition, float damageAmount, float areaOfEffect, string damageCauser)
     {
        
         this.damageAmount = damageAmount;
         this.areaOfEffect = areaOfEffect;
         this.damageCauser = damageCauser;
 
         movingDirection = Vector3.Normalize(target.gameObject.transform.position - gameObject.transform.position);
 
         
 
     }
 
    
     // Update is called once per frame
     protected virtual void FixedUpdate()
     {
        
 
         if (line.time <= 0.0f)
         {
             _trailTimer -= Time.fixedDeltaTime;
             if (_trailTimer <= 0)
             {
                 gameObject.renderer.enabled = true;
                 line.time = 0.50f;
                 _trailTimer = 0.1f;
             }
         }
 
         trans.position += movingDirection * Time.fixedDeltaTime * speed;
 
        
         spentLife -= Time.fixedDeltaTime;
 
         if (spentLife <= 0.0f)
         {
             line.time = -1;
             ObjectPoolManager.DestroyPooled(gameObject);
         }
 
 
 
     }
 
     void OnTriggerEnter(Collider other)
     {
         line.time = -1;
         DestroyProjectile();
 
 
     }
 
     public virtual void DestroyProjectile()
     {
         gameObject.renderer.enabled = false;
         ObjectPoolManager.DestroyPooled(gameObject);
 
         
     }

I've got a similar issue.. I'm making a game with a rolling ball for android. And in this game is a teleporter, but every time if the ball (the ball has a trail) passes trough the teleporter you can see the trail going from teleport pad A to pad B .. very annoying. I tried to stop it but it did not work out.

public void OnTriggerEnter(Collider other) { other.GetComponent<TrailRenderer>().enabled = false; other.transform.position = Destination.transform.position; other.transform.rotation = Destination.transform.rotation; other.GetComponent<TrailRenderer>().enabled = true; }

Its simple, put Trail render component in empty node under object with trail and use gameObject.setActive() for this child node