I also see a few downsides to these kind of devices. For one, if for example you have a fake rock somewhere in your yard that has a hidden key inside it, then that means someone else can get that key just as easy as you can. So make sure that no one sees you when you go hide your key for the first time. I would also suggest moving the keys hidden location every time you return to it to use it.

Some tips I’d give anyone who uses a hide a key type of diversion safe to hide an extra key is to make sure the location is not obvious. Make sure the device blends in and that it won’t be found by some random person just wandering through your yard for whatever reason. Whatever you do, do not leave an extra house key under your welcome mat.