Don't count on finding this kind of thing. Some silly people put bombs in there. Our Homeland Security people try to head those things off. In Europe, especially GB, you can't even find a trash can on the sidewalks for the same reason. A worker at the train station told us to just throw it on the floor, the people in the green jackets will pick it up. Really. What a world we live in. Denver Lockers
Most storage facilities host an auction every 1 to 3 months to recoup their losses from those renters that go with option number 2.  At these auctions, which are open to the general public, seized lockers are opened up one at a time and potential bidders can take a look at what’s inside (nobody can go into the locker, and you can’t touch anything).

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Double- and triple-tier lockers also work well in other parts of a school. You might want to consider installing some in the teachers' lounge. This convenient addition will enable educators to store their personal belongings throughout the day, rather than having to carry them around. Ordering metal lockers for your employees will demonstrate that you care about their comfort and convenience.

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In my experience, most facilities give you 48 hours to have the unit cleared out and left in a “broom clean” condition (i.e. swept out). If you don’t get your stuff out, of if you choose to cherry pick a few items and leave the rest, then the facility can reclaim the locker and it would most likely be auctioned off again. You’d also most likely be banned from participating in future auctions held at that facility, or run by the auction house you dealt with. Lockers Denver Colorado