Well, I tend to put out about 1 per 100 found. Yeah, not all that great a ratio. But then people can't be bothered to go out and find them. My first placed FINALLY was found recently, but the second remains nearly 2 years later. And it is ONLY 9 miles up the trail. The other was 3-4. Even the ones less than a mile round trip have only a few finders. But I'm due putting another out in not too long.