Easier said than done. I live on a small farm with horses. Even after all these years, we still find barbed wire (very dangerous for prey animals whose response to danger is to bolt away at high speed) in the ground, or in trees, miscellaneous bits of farm equipment debris that&#x27;s decades old, and all sorts of metal embedded in the ground. All of this stuff was from before we moved here, it&#x27;s just extremely difficult to detect until you are literally standing over it.