HUMAN poo has been dumped at the homes of two Brisbane residents after they complained about garden edging linked to the Legacy Way tunnel project.

Homeowners made the gruesome discoveries on a gate and a wheelie bin after they raised concerns about the timber edging.

They said screws protruding from shards of timber had punctured car tyres and posed a danger at the Ada St carpark at Toowong.

media_camera One of the broken wooden panels from the garden edging.

Resident Peter Bennett said another homeowner in the neighbourhood also had their car tyres deflated.

"Two residents including myself have had human poo left," he said.

Mr Bennett said he had also been called a "f***head" by a man as he drove into the worksite.

The incidents have been reported to police, and he was informed the driver had been issued with an official warning by police.

But Mr Bennett said the situation was becoming toxic.

"It's causing a lot of the residents around the area a lot of stress and anxiety. People are starting to put chains on gates now," he said.

"It's getting a bit out of hand."

A Brisbane City Council spokesperson said council is aware of the claims and takes the behaviour of Legacy Way's workforce in the community very seriously.

"Council works with Transcity to ensure all complaints are investigated as a matter of priority. This matter has been fully investigated and there is no evidence to suggest there's been any wrongdoing on Transcity's behalf," she said.

The spokeswoman also said Transcity had investigated the complaints about the Ada St car park garden edging, and had responded immediately by removing all damaged edging and debris.

"In addition, Transcity will also remove the remainder of the existing timber edging in the area of concern to remove any further hazard."

Originally published as Stinky salvo after tunnel complaints