The owner of The Exchange Clock Tower is pursuing "every approach known" to rid the building's roof of persistent pest pigeons.
Jillian Kilby reported of fresh measures taken at the heritage property in Macquarie Street, and vowed to continue with the task.
Last month Ms Kilby said the feral birds could be seen on most buildings in the vicinity and called for a "whole-of-street" response to the problem.
This month pigeons have started to find The Exchange Clock Tower a less than cosy habitat.
"Last week we brought in someone to remove the pigeons from the clock tower," Ms Kilby said.
"A floodlight was installed and so far is effective, a sound repellent device is going to be installed... and we will be putting spikes on the spire in the next couple weeks with a boom lift.
"You'll notice pigeons have moved to the spire because of the floodlight."
Ms Kilby has embarked on a major restoration of the building after buying it from Telstra in November.
The fresh round of measures came after the pigeons returned within three months of first being addressed.
Ms Kilby was determined to keep them at bay and urged other landlords to do the same.
"I continue to hear comments and frustrations from the community - I'm pleased to say we rolled up our sleeves and did what we promised to do," she said.
"In saying that, we are doing every approach known.
"And we will continue our work.
"We hope other building owners will do the same."
Earlier this month householder Kris Stevens told of the "considerable" amount of time and money it cost them to remove a family of pigeons from their roof cavity in central Dubbo.
Dubbo Regional Council confirmed that in 2018 "another series of measures" was conducted at the Western Plains Cultural Centre "in an attempt to control the pests".
Last month Daily Liberal readers took to social media to suggest ways to deter the pigeons, including a hawk nest and a sprinkler system.