Mighty Probe is the tool for the job when you require to probe deep and fast

https://tysonnmfw051.evergrovio.com/posts/just-how-to-find-a-septic-tank-with-a-mighty-probe-before-buying-a-home

Mighty Probe is the device for the job when you require to probe deep and quickly, incorporating rugged efficiency with precise handling for assessments, screening, and tough field applications.