Start by checking local reviews and confirming that the pest controller is licensed to use pesticides in your state or territory. Ask whether they can identify the ant species, locate the nest and explain the treatment, including any safety precautions for children and pets. Keep food sealed, clean spills promptly and avoid spraying ants before the inspection, as this may make the nest harder to locate. Compare written quotes and check what follow-up visits or warranty terms are included before booking.