I normally use a lockbox by one of the name-brand lock companies, for an AirBnB property I help manage. I've had one of these name-brand boxes--which are extremely heavy--lock up with an unknown combination while I wrangled it. The South Main Hardware is light enough to maneuver with both hands and has a manageable "security switch" easily manipulated, if you want to change the code from 0-0-0-0.I've owned this less than twenty-four hours but know already I'll be using these rather than the heavier "name-brand" boxes from now on. If it matters, and it does, I utilize lockboxes to hide only a single key.