Choose a licensed pest control business that explains which cockroach species may be present, the treatment method, preparation required and any follow-up visits. Ask about costs, pet and child safety, warranties and how long you should stay out of treated areas. Good treatment usually combines professional products with hygiene measures, sealing entry points and removing food and water sources. Results depend on the infestation, property and service provided, so compare written quotes and check the operator’s NSW licence before booking.