Give them 6 more cups of rice, some canned sweet potatoes and a gallon bottle of water, diapers if they need them and a bar of chocolate. I might even throw in a can of Sterno and a Bic lighter.
But the parameters of the deal remain the same. I can't afford to have them coming back for more or looking around inside my house. And I am prepared in case they happen to tell anyone else where they got it.
Unless you've got a company of Marines on retainer, no, you don't. No one is.
The outsiders will be organized. Bet your life on it.
If TSHTF, someone coming to your front door should see an abandoned house that appears to have already been ransacked. He should think "nothing here" and move along on his own accord.