Eh... 4 maybe. I'm good for about a month right now - more on food. Water is one of my main issues. I need to store more and I should get a filter. In the winter heat would be an issue. The biggest problem I can see, for me, would be the very real threat of violence in an extended situation - I live alone in an urban area and have limited Bug Out options with the exception of a few friends and family in a close suburb. I have one good neighbor, the rest are - well they are the problem. Even in good times they are of questionable moral fiber (bluntly - they're crackheads and thieves) - I don't want to think what they'd be like under bad conditions.