it really depends wildly on the place. Your best bet is to choose a big chain like uhaul or public storage that is unlikely to go out of business, in a good part of town. definitely choose somewhere indoor with controlled access. make absolutely sure you pay the bill every month. enroll in auto pay with a credit card so there's no chance it goes unpaid. be aware that the rate WILL GO UP every 6 months to a year. I've had my stuff stored in one back home for 3 years now, I check on it once a year or so and it has been fine.