If your postal delivery man missed you at your home, depending on your neighborhood, mail theft is now a on going common issue occurring in many states. If your postal worker decides that someone might end up stealing your box, they will not leave it at your front door. Your postal worker may require you to be home to retrieve the package, and if they can't redeliver, you'll need to pick your Pawty Box up at your local post office.
You can schedule a redelivery, and add a note with instructions for your postal worker on the USPS website. Delivery preferences can also be set by visiting my.usps.com
If you'd like your postal worker to leave your Pawty Box at your door, it's best to leave a note or discuss this with them in person before the delivery date.