Darwin’s hot, humid climate can support cockroaches year-round, so effective treatment usually combines a professional inspection with targeted gel baits, sprays or other approved methods. Choose a licensed pest management technician who can identify the species, explain preparation and advise how long to keep people and pets away from treated areas. Seal food and rubbish, fix leaks and close entry points to help reduce reinfestation. Results and follow-up needs vary, so ask the provider about the treatment plan, safety instructions and warranty before booking.