My grandparents house has a massive yard, and it was built over 200 years ago. The dining room apparently used to be a store, and there used to be a road running through the back field (absolutely no trace of it now, but I can confirm from looking at maps from the mid/late 1800s) also has a huge tree, clothes line, well... and a dirt cellar that is pretty large. The problem is that the detector is going off constantly, and a lot of the time it’s just like the smallest piece of crumpled up metal. Any general advice for searching a property like this? I’m not sure when it’s worth digging or not.