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Stop the Little Fire Ant Report Here Request a Collection Kit

Little Fire Ants on Oʻahu

Note that these ants may be present anywhere on Oʻahu, and the status report is only for infestations that were discovered and reported.  We need your help to find them before colonies grow too large to eradicate. Oʻahu has the most residents of all the islands, which means that we have a greater chance of catching little fire ants before they become established. Collect ants from your property and send them for identification at least once a year and find them before they find you…submit your ant samples to the the Oʻahu Invasive Species Committee at 743 Ulukahiki St., Kailua, HI 96734.  OR, request a free ant collection kit by clicking the link below. 

Request a FREE Ant Collection Kit with a pre-addressed return envelope here.

Regional Map Links (Updated February 2025)     

Active Sites: Active sites are those that are undergoing surveys to determine their size and/or are being treated for eradication.

FOR MORE DETAILS ABOUT OʻAHU LFA SITES, VISIT OISC LFA COMMUNITY PAGE.

  1. Lanikai 2 – Aug 2025 – Active (Hotspots only)
  2. Nuʻuanu 4: Aug 2025: Active Phase
  3. Hakipuʻu 1: Jul 2025: Active Phase
  4. Nuʻuanu 3: Jul 2025: Active Phase
  5. Makiki Heights 2: Jun 2025: Active Phase
  6. Laʻie 2: May 2025: Active Phase
  7. Mānoa 2: May 2025: Active Phase
  8. Waiheʻe 2: May 2025: Active Phase
  9. Aina Haina 4: May 2025: Active Phase
  10. Kaelepulu 6: May 2025: Active Phase
  11. Waipahu 1: Mar 2025: Active Phase
  12. Kahaluu 2: Mar 2025: Active Phase
  13. Ahuimanu 6: Mar 2025: Active Phase
  14. Kailua 10: Mar 2025 – Active Phase
  15. Maunawili 8 -Feb 2025 – Active Phase
  16. Hauʻula 3 – Feb 2025 – Active Phase
  17. ʻĀhuimanu 5 – Feb 205 – Active Phase
  18. ʻĀina Haina 3 -Dec 2024 – Active Phase
  19. Kailua 9 – Nov 2024 – Active Phase
  20. Keʻelepulu 5 – Oct 2024 – Active Phase
  21. Keʻelepulu 4 – Oct 2024 – Active Phase
  22. Kailua 8 – Oct 2024 – Active Phase
  23. Maunawili 7 – Oct 2024 – Active Phase
  24. Maunawili 6 – Oct 2024 – Active Phase
  25. Honolulu – Sep 2024 – Active Phase
  26. Aiea – Aug 2024 – Active Phase
  27. ʻĀina Haina 2 – Jul 2024 – Active Phase
  28. Nuʻuanu 2 – Jun 2024 – Active Phase
  29. Ka’elepulu 3 – Jun 2024 – Active Phase
  30. Kailua 5 – Jun 2024 – Active Phase
  31. Roundtop 2 – May 2024 – Active Phase
  32. Nuʻuanu 1 – May 2024 – Active Phase
  33. Kaneohe 15 – Mar 2024 – Active Phase
  34. Ka’elepulu 2 – Mar 2024 – Active Phase
  35. Pearl City – Mar 2024 – Active Phase
  36. Maunawili 5 – Feb 2024 – Active Phase
  37. Maunawili 4 – Feb 2024 – Active Phase
  38. Kahaluʻu Beach – Jan 2024 – Active Phase
  39. Kailua 4 – Dec 2023 – Active Phase
  40. Kāneʻohe 14 – Dec 2023 – Active Phase
  41. Lanikai 6 – Dec 2023 – Active Phase
  42. Round Top Drive 1 – Dec 2023 – Active Phase
  43. Kāneʻohe 12 – Nov 2023 – Active (Hotspots)
  44. Kāneʻohe 13 – Nov 2023 – Active Phase
  45. Kailua 3 – Nov 2023 – Active Phase
  46. Waimanalo South – Oct 2023 – Active (Hotspots)
  47. Waiāhole – Sep 2023 – Active Phase
  48. Waiheʻe – Aug 2023 – Active Phase
  49. Kaʻelepulu 1 – Aug 2023 – Active Phase
  50. Kāneʻohe 11 – Jun 2023 – Active Phase
  51. ‘Āhuimanu 2 – May 2023 – Active Phase
  52. Kāneʻohe 10 – Feb 2023 – Active Phase
  53. Lanikai 4 – Dec 2022 – Active Phase
  54. Kāneʻohe 9 – Nov 2022 – Active Phase
  55. Hauʻula 2 – Nov 2022 – Active Phase
  56. Kāneʻohe 8 – Oct 2022 – Active Phase
  57. Kāneʻohe 7 – Oct 2022 – Active Phase
  58. Kāneʻohe 6 – Oct 2022 – Active Phase
  59. Kāneʻohe 5 – Sep 2022 – Active Phase
  60. Kāneʻohe 4 – Aug 2022 – Active Phase
  61. Papakōlea – Jun 2022 – Active Phase
  62. Hauʻula 1 – Jan 2022 – Active Phase
  63. Kahuku – Dec 2021 – Active Phase
  64. Maunawili 2 – Oct 2021 – Active Phase
  65. Waimānalo 3 – Apr 2021 – Active Phase
  66. Kāneʻohe 3 – Apr 2021 – Active Phase
  67. Waimānalo 2 – Feb 2021 – Active Phase
  68. Waimānalo 3: Jan 2021: Active Phase
  69. Maunawili 1 – Oct 2020 – Active (Hotspots)
  70. Kailua 1 – Oct 2020 – Active Phase
  71. Sunset Beach- Apr 2020 – Active Phase
  72. Kahala – Feb 2020 – Active Phase
  73. Makiki Lower – Jan 2020 – Active Phase
  74. ‘Āina Haina – Dec 2019 – Active Phase
  75. Kāneʻohe 2 – Nov 2019 – Active Phase
  76. Lāʻie – Oct 2019 – Active Phase
  77. Lanikai 1 – Jul 2019 – Active Phase
  78. Makiki Heights – Jul 2019 – Active Phase
  79. Kualoa Ranch – Jun 2019 – Active Phase

Monitoring Sites: These sites have undergone the treatment cycle and no LFA were detected once treatment was completed. Monitoring surveys continue for at least 3 years to ensure successful eradication.

  1. Kailua 7 – Detected August 2024 – Monitoring phase
  2. Kailua 6 – Detected Jun 2024 – Monitoring Phase
  3. Lanikai 5 – Detected Sept 2023 – Monitoring Phase
  4. Lanikai 3 – Detected Aug 2022 – Monitoring Phase
  5. Maunawili 3 – Detected Aug 2023 – Monitoring Phase
  6. Kailua 2 – Detected Aug 2021 – Monitoring Phase
  7. Hawaiʻi Kai 1 – Detected Mar 2022 – Monitoring Phase
  8. Kailua 2 – Detected Aug 2021 – Monitoring Phase
  9. Mānoa 1 – Detected Nov 2020 – Monitoring Phase
  10. Mililani Mauka 2– Detected Nov 2020 – Monitoring Phase
  11. Pauoa – Detected Aug 2019 – Monitoring Phase
  12. ‘Āhuimanu 1 – Detected Jan 2019 – Monitoring phase

Eradicated Sites: These sites have undergone successful treatment and have been ant-free for at least three years.

  1. Campbell Industrial Park – Detected Dec 2013 – Eradicated!
  2. Waimānalo 1 – Detected Apr 2014 – Eradicated!
  3. Mililani Mauka 1 – Jun 2014 – Eradicated!
  4. Kāneʻohe 1 – Detected Dec 2018 – Eradicated!
  5. Kaimuki/Punahou Carnival Plant Sale – Detected Feb 2019 – Eradicated!
  6. HECO Ward – Detected Jun 2019 – Eradicated!

LFA TREATMENT FOR ERADICATION: It may be helpful to understand that it takes at least 4 years to be sure of the successful eradication of an infestation of little fire ants. We aren’t trying to just control ants and reduce their numbers, eradication means completely removing them from a site. The eradication process includes 8 treatments over the course of a year, followed by years of regular monitoring to ensure no ant colonies persist. This method was developed by the Hawai’i Ant Lab (HAL), implemented by the Hawai’i Department of Agriculture (HDOA), and has proven successful in various sites across the state. 

Active Treatment Phase: Once LFA are confirmed at a site, a full survey to find the edge of the infestation, followed by treatments of the area (plus treatment of a “buffer zone” around the edge) every 6-8 weeks over one year.  At the end of the year, an intensive survey is conducted to detect any remaining little fire ants.  If ants are found, that site is treated in the same manner for an additional year.  If and when no ants are found, the site moves into the next phase of the eradication program…monitoring.  

Monitoring Phase: Once the active treatment phase is completed and no LFA are detected, the site is surveyed quarterly for at least 3 years.  Only at the end of this treatment and monitoring regime with no LFA detected can an infestation be considered eradicated.

Eradication: The site has been treated and undergone at least 3 years of monitoring, at which time is completed and no LFA have been detected, the site is considered eradicated. This means all queens and their colonies are gone.

On Oʻahu, you can mail ant samples to OISC for identification:

  • O’ahu Invasive Species Committee (OISC)
    • 743 Ulukahiki St.
    • Kailua, HI 96734
    • 808-266-7994 – Mon-Fri, 7:00am-3:30pm
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