That's about as far from clean as you can get, the first thing they would do is seize all your electronic devices and I'm not even going to talk about scales. Anything on your computer must be encrypted with truecrypt and use a bootable USB for Tor and never leave it lying around or plugged in when you are not using it. It's probably all just a false alarm or this is a load of BS, either way better to be safe than sorry. Plan for the worst and stop ordering to your home address, get a safe drop not linked to you, it's not that hard. Hope everything goes ok whatever this turns out to be.