The mother of murdered teen Hayley Dodd has vowed to rethink future searches for her daughter's remains after a site identified by a psychic failed to deliver clues to her final resting place.

The psychic believed 17-year-old Hayley's body was buried five kilometres away from her killer's home, off a quiet stretch of road in Badgingarra.

Margaret Dodd says specially-trained dogs had also picked up a scent in the area.

Camera Icon Margaret Dodd saJohn Wark the convicted rapist suspected of murdering her daughter Hayley. Credit: The West Australian, Steve Ferrier The West Australian.

Her grandchildren even helped dig for an aunty they never met and machinery was brought in to progress the search.

"This spot has come up time and time again basically because this woman truly believes Hayley is there," Mrs Dodd said.

"What choice did we have, we started digging."

Hayley went missing while hitchhiking to a farm in Badgingarra in 1999.

Camera Icon The site where a psychic had dreamt Hayley was buried. Credit: Seven News.

Francis John Wark was convicted of her murder, but won't reveal where Hayley's body is.

The latest search drew a blank and Mrs Dodd has vowed not to undertake another because of the heartbreak it had caused her family.

The only exception would be if Hayley's killer reveals where she is buried.

"It put me really really down, it's messed around with my daughter's head," she said