Have you ever seen those shows where the crook is cracking the safe? Well in real life, unless the safe is really heavy, they will just take the whole thing with them. Or worst, if it is that difficult to open, then they know it probably has some valuable items in it and may spend the time to crack it. Better choice is to get one of those Diversion soda can safe. Put some really important items in a few of these cans and store them in the storage. Make sure the cans are placed next to other ones of the same brand. The thief won’t even know they are there.