When normal tools can not reach far enough or function fast sufficient, Mighty Probe is the tool for the job
https://johnathanhzsk379.talesignal.com/posts/exactly-how-to-discover-a-septic-tank-near-the-house-with-a-mighty-probe
When ordinary devices can not reach much enough or work quickly enough, Mighty Probe is the device for the job, giving you the depth, rate, and control required to obtain it done.