Ever assume it was fine until you got that thick diesel taste in your mouth? I once thought I could just open the side door a crack while I bled some injector lines. An hour later I was lightheaded, coughing, and my garage smelled like a city bus depot for three days. My own stupid fault for thinking a two inch gap was enough airflow. That metallic taste is your clue you've already messed up.

Casey's "full stop" is right but in my experience showing beats telling. I pull the client over, point at the nest, and say look, your fence can wait eight weeks but these birds get one shot. Once they see the actual babies moving around, most people get it. It turns a no into a shared plan instead of a fight.

Guess we should start charging for letting people breathe our air too.

My uncle in Montana always uses a metal rod to probe for rocks before drilling. It's like what @hannah_anderson82 said, but with extra steps to save your tools.