Valuables in a safe are secure. Until, that is, some safecracking burglar comes along. You can hide a combination lock safe, but thieves can find it, anyway. And they just might know how to crack it open.
Diversion safes are better than safe boxes because they look just like everyday objects and will not be discovered in the first place. Those rare thousand-dollar bills you’ve got are better off in the Ajax 21 oz Diversion Safe because a can of detergent is the last place any thief will look. This one weighs just like the product it is duplicating.