I have a friend who has taken to storing part of their food stores in a local storage unit. I'd like to tell you about it.
He picked the storage unit based upon a number of criteria:
- Locality to his house.
- EMP protection. (this particular unit is essentially a concrete bunker in a climate controlled building)
- Ability to get access most hours of the day without a lot of hassle.
To help secure the food, my friend stores only food grade buckets and number 10 cans in the unit.
There's a lot of down sides to having food kept off premises. Getting it out of the unit can be tricky, especially if there's a lot of it. I'm pretty sure the owner of the storage unit probably doesn't want food stored in there, although I suspect the way it's being stored prevents it from attracting vermin. And there's the rental fee every month - money that could be spent on other things.
Overall, I think it's a good concept. Just make sure you've got as much food stored at home as you can before storing off site.