Ok, I will add my families story: My father liked to hid money, coins or paper, it didnt matter. It was just a habit, and it got worse as he got older. He like plastic bottles to hide the paper money in, in the basement. Well, the rats or mice also liked the taste of the plastic, so after he died, I found some of his stash, but some, the rats found first. They didnt eat much of the money, just the plastic container.
The brother-in-law, that lived on the same property, had the same addiction for hiding money. On day while in an old shed, I seen what looked like ground up paper money on the floor. Then I discovered that apparently a stash had been put up in the rafters, but again, the mice had got there first, and made a nest out of the money, but I think the inlaw got most of it back. After that, I would spend time treasure hunting, sitting in a shed and profiling the area. I decided that the flower bed (inside the shed) would be the next place to look, so took my "probe", a stiff piece of wire I made, and started probing the area. Didnt take long to find an object buried, and dug it up; there was about 30k in 100's. Thought it was one of my fathers stashes, but then noticed the price marker on the plastic bag, was from a store my father doesnt go to, but the inlaw does. Well, I put it back, to avoid a war in the family, and it eventually vanished, so it wasnt my fathers. Who knows what might have been left on the property, and since there were dozens of people doing work around the house, they could have found something and just didnt say anything about it. About 10k was found and reported, but im sure not all.
So, I think most caches are hid where they can be recovered easily, not three feet deep, and more than likely in an out building or basement. People need to get to there cache without being seen, and without tearing out a wall, unless its some kind of simi-permanent cache.
