How do I locate black drain tile 3 feet in the ground without digging my whole yard up?

Question

The drain tile is 3 feet in the ground and I have dug up the places where I thought the tile would be. Is there a way to locate it without digging up my whole yard

Answer 1

sure but it would cost more then digging up the whole yard....a type of radar

Answer 2

Our septic man had a long rod, that'd he's push into the ground to find the end of the drain field. Maybe something like that would work. The soil will have to be soft to shove something in 3 feet or so.