I answered a Craigslist ad today to help a 90 year old man who lost a hearing aid in his yard. I called the number and a woman answered. She said the man was cutting his grass and ran over a ground bee hive, got stung a few times and lost the hearing aid as he pulled off his hat for a swatter. Said the hearing aid was all plastic but she hoped the battery would give a signal. Seemed like an easy mission, and since I was a ground bee victim earlier this week, I figured I was divinely ordained for it. I loaded up the Sovereign XS2a with the WOT and headed out. When I arrived, the gentleman showed me the hearing aid in his other ear, so I'd know what I was looking for. It was pretty darn small. I did a test pass with it, hoping it would ring high enough that I could disc out and make it a quick hunt. I was amazed and disappointed to find that it would not even break the threshold, even in AM. The old man had only had the aids for a few weeks and hadn't had to change batteries yet, so he didn't even know what a battery looked like. I really wanted to dismantle his good aid so I could verify that it indeed had a metallic battery. I did a half hour visual with my useless detector propped against his house. No luck...Bummer.