We were interviewed, they found there were no issues, and the case was dropped. Very stressful experience, though.
And for what? I grew up on a farm in Nebraska. We had endless fields and roads around us to explore. The only off-limits area was an abandoned hog confinement, which to be fair, absolutely could have killed us (by falling into the open trench of porcine waste) – naturally, we still went there.
I know that reeks of survivor bias, but given the length of time Homo sapiens have survived, I think it’s a reasonably safe assumption that kids, when left to their own devices, are unlikely to be seriously injured or killed. Though, that’s probably only true if they’ve been exposed to it gradually over time, and are aware of the risks.
However this doesn't mean the government should not act. An interview of a false complaint is a small cost to pay compared to not doing anything when there is a real problem. Most of the time those employed to do the investigation known to look for signs of false reports and neighbor conflicts in order to filter them out, but at the same time they do need to make sure as to not miss-classify a real complaint.