How can I destroy an object once it enters a trigger?

I have a box with the Is Trigger on, and a mouse with a rigid body component and the following script:

using UnityEngine;
using System.Collections;
public class BlackBoxDestroy : MonoBehaviour {
void OnTriggerEnter (Collider coll) {
Destroy (coll.gameObject);
}
}

I’ve also tried it with tags:

using UnityEngine;
using System.Collections;
public class BlackBoxDestroy : MonoBehaviour {
void OnTriggerEnter (Collider col) {
if (col.gameObject.tag == “Mouse”)
Destroy (col.gameObject);
}
}

Neither have worked. Also tried other variations…HELP

Your mouse needs a collider too.