well i invested in the Ortovox Terrier Locator and barryvox pluse this week this is the third time i dug to it this week well since sunday , it's some job i tell you , i had a little terrier out today to see how it would go, it entered rightway in a deep spot gave it 5 mins or so before turning on the barry vox, in seconds i had it at 18 on the box behind me with out moving a inch i move in to where the arrows told me as the numbers going down got a mark at 1.o which is about 3 feet could hear him braying away i know it was a fox, i left him 20 minutes or so, we had 2 lurchers coverin