I hunted a fresh farmhouse front yard tonite after work, I scanned it for an hour. I try to hit at least 2 new yards a week. The Exp II kills the silver. I almost didn't dig the Walker, as I was tired of diggin wheats out of the heavily-rooted yard. Glad I did, almost stabbed it! Wheaties gave silver-like readings at 7" deep average, moderalely moist soil. I am using a second-hand detector that I bought from a friend, and the integrated probe is a must. If it's a small yard (100x100), I will spend an hour or so there and probably won't go back, don't want to wear out the welcome, so hit it hard the first time!