I believe (at least in the UK) that Tetrapak contribute to a recycling scheme (hence the Green Dot symbol - note it's NOT the regular recyclable symbol). With a bit of research I found a dedicated Tetrapak collection bin locally which we now take all our cartons to from time to time.
Things might be different where you are in the world.
They may collect it but Tetrapak is inherently barely recyclable - it contains plastic, paper and metal which can't be separated.