Start by removing food and water sources, sealing gaps around doors and windows, and cleaning ant trails with soapy water. Baits can help workers carry treatment back to the nest, but the most suitable product depends on the ant species and where the nest is located. Avoid mixing products or spraying over bait, as this may reduce its effectiveness. If ants keep returning, or you suspect fire ants or significant property damage, contact a licensed pest controller and follow Queensland Government advice.