I love the USPS. Really, I do.
It took me re-submitting the same form twice until I finally gave up and put a bold-printed sign on my doorstep that says:
ATTN:
Mail Carriers
Please do not leave packages on my doorstep, I have had them stolen before. Please leave all packages with the Leasing Office.
This after one of my fantastic neighbors ripped off a box of rare Paintball marker parts, and I followed a trail of packing peanuts to where the empty shipping carton was dumped in a community trash bin, after I had already submitted the form authorizing my leasing office to sign for packages.
Of course, the Post Office said they weren't responsible, and it was the first time I'd ever had a package taken at this address, so I hadn't bothered to insure it. My fault on that count, of course. But still.
I suggest shipping with UPS. I hate dealing with them. Easily, out the packages I've had shipped here by them, I've had to drive 15 minutes to pick up half of them at their shipping depot after work, because they refuse to let anyone but the owner sign for one.
They also can't be bothered to knock, and have driven away after just taping a failed delivery notice to the door. No knock, don't bother to ring the doorbell, just *thwack* failed delivery attempt notice, then the engine sound of the truck as they gun it down the block to deliver the next Post-It-Note.
But hey--I've never lost a package yet with them!