I recommend you ship via express mail with a tracking number and signature on delivery. Normally with any parcel if nobody's home you get a little card and have to pick up the parcel at the local PO. With some courier services (Fedex etc.) they will keep coming back 3 times and call the recipient to arrange a good time to drop off. Most deliveries seem to be early morning between 9 and 10am (at least in my area).