The Nissan Path

I have a new 2014 Pathfinder does anyone know the best type of Deer Whistle to buy that may fit in the grill and be hidden and not on top of the bumper?

I'd think you can buy one of the smaller plastic ones and just stick it on the underside of the bumper. If all it needs is air going through it you could also put it behind the grill somewhere where it will get wind.