Yes, Unity has it own intersect method.
Attach a collider to your game objects that should check for collision. You do not have to use a Rigidbody for Bounds.Intersects. Also it works for both 2D and 3D
//If the first GameObject's Bounds enters the second GameObject's Bounds, output the message if (collider.bounds.Intersects(collider2.bounds)) { Debug.Log("Bounds intersecting"); } 