I had never thought twice about the strength and design of the mls key boxes we use. I would assume that realtors across the country use the same thing, but here in suburban Seattle we use the typical electronic key box with the little back holding cartridge that pops out of the bottom. They're pretty heavy and seem sturdy enough to protect the key inside, but apparently that is not the case. Even though we hardly hear about them, home burglaries are not uncommon (especially with the current (11 comments)