What's smaller than nano? Pico! This cache is 14mm long, 4mm wide in diameter, and could fit inside a large magnetic nano container. The log sheet is less than two blocks of a nano log strip. This very well could qualify for the smallest Geocache in Stafford County, if not in the entire state of Virginia. Considering how fragile such a small cache this is, I tried to find a hiding location that would limit exposure to moisture. To reduce the frequency of replacing the log since it is so small, please initial in the smallest space you can and don't worry about the date.
2022 Update:
This area use to not be so filthy. I understand the complaints and so I have moved the cache. Also, the original container has been MIA so it is no longer as described but is still a very tiny nano, and in keeping with the difficulty rating, you'll still need to search for it but at least it will be just a little more possible than it previously was. Across from the alley (from the coordinates) you will see a green transformer box—this is the new location for your search. Please return it in the same place that you found it. Happy hunting!