Yellow Crazy Ants

The Yellow Crazy Ant species is believed to have originated from Africa but has since migrated throughout the Pacific region, often arriving by way of sea cargo.  Yellow Crazy ants have become one of the world´s “worst invaders” according to the World Conservation Union and are considered a major threat to biodiversity. These ants are currently a pest in Australia, Hawaii, and the Seychelles Islands, with large super-colonies on Christmas Island.  Yellow crazy ants are brownish-yellow in color.  In comparison to other ants, they are quite long, with some being over an eighth of an inch in length. Yellow crazy ants have multiple queens, just as other crazy ant species, and the same crazy, erratic behavior. These ants have also disrupted natural environments of wildlife, causing significant declines in native birds, animals, bee hives, and plants. Yellow crazy ants don´t sting – they spray formic acid as a defense mechanism, which in large amounts, may burn or irritate the skin and eyes of both humans and animals.

Crazy Ant Eating Habits

The Yellow crazy ant is also known as the Long-legged ant or Maldive ant and is a “scavenging predator,” meaning, it will eat just about anything dead or alive, and attack spiders, insects, earthworms, and other invertebrates. Yellow crazy ants will also consume seeds and grains but prefer carbohydrate-rich foods collecting honeydew from sap-sucking bugs such as aphids. They will also feed on plant nectar.
Yellow crazy ants eating a lizard.

Yellow Crazy ants carrying away a lizard.

Impact on Ecosystems by Yellow Crazy Ants

Out of all the crazy ant species, the Yellow crazy ant is considered the worst invader. Yellow crazy ants prefer tropical and subtropical climates but in northern Australia, they appear to thrive in rocky, dry areas as well as the grasslands, where there is an abundance of floral carbohydrates to feed on. The Yellow crazy ant seems to be very adaptable, destroying coffee, coconut, and other crops in their wake.
Red Crab of Christmas Island

Christmas Island´s red land crab has declined in numbers because of the Yellow crazy ant.

On Christmas Island, the Yellow crazy ant has killed and displaced the land crap, depleting the numbers of crabs which are so important to the island´s biodiversity. It´s the land crab that turns the soil in the island forest by digging burrows and fertilizing it with their droppings. Yellow crazy ants actually eat the crabs and use their burrows for their own nest. The damage these ants have done to the ecosystem on Christmas Island has been devastating for both animal and plant life. Yellow crazy worker ants live about 76-84 days, whereas their queens can live for several years. Their success as a worldwide pest is due to their adaptability, and like other crazy ants, Yellow crazy ants have multiple queens that split into individual super-colonies. They can also mate with their siblings, without negative consequences. The amount of damage Yellow crazy ants have done to various islands and countries across the globe has earned them the name the “World´s Worst Invader.”

Controlling Yellow Crazy Ants

The infestation of Yellow crazy ants on Christmas Island was so bad that in 2009 they had to use helicopters to aerial bait the forest. In Australia, bait specifically developed for the Yellow crazy ant has been used with great success. The bait is low toxicity, designed for crazy ants and does not affect Australia´s wildlife. Yellow crazy ants will nest in all kinds of material including potting mix; these ants are currently traveling the world through accidental methods by way of freight and by passengers. At the moment, Yellow crazy ants have only made it into the states as far as Hawaii. But, many Americans travel there and back to the mainland on a regular basis which could be a potential invasion just waiting to happen. It´s important when visiting islands and countries infested by the Yellow crazy ant that travelers check their transported items such as potted plants, household goods, and machinery, for any of these “invaders.”

HP Banner



Review our amazing pest
service options

You can add other problem pests to your “general pest
control” service.

Why Choose Hearts Pest Management:
Health Conscious First do no harm! Custom Built Plans Flexible Scheduling Technicians Communicative & Trustworthy Budget Sensitivity
We customize the service to your needs & pest situation.


What Our Customers Say
“Able, honest and extremely knowledgeable and polite. They come bi-monthly and use an organic solution to spray outside. It’s a pleasure and relief to do business with them.”
~ Carri B.
View more
“The technician Austin was on time. Very personable and explained products in detail and is very knowledgeable. Very thorough and the organic and eco friendly products were our first choice. We signed for the every other month especially for spiders and ants.”
~ Mark
View more

Pest Behavior & Solutions

Pest Behavior & Solutions

We Know About Pests, You Can Too. Visit our Pest Library for information
on the habits and habitats of some of the most common pests.

See Full List of Pest
  • General pest control and certified green pest control options:

Carpenters ants, bedbugs - separate esimate

Choose the service schedule you need:

Weekly, Monthly, Bi-Monthly, Quarterly, Reduced winter service.

See More General Pest Services

Free Inspections

Free Inspections
for Prevention & Extermination

We provide free inspections for
various complex pest control
situations. Our pest control services
are tailored to each community and
their unique micro-climates that
impact your pest control plan.

We are the first pest control company in Southern California to achieve the California EPA Integrated Pest Management Award.

  • In-door trapping
  • Out-door baiting or trapping
  • Full exclusion to keep them out!
  • Decontamination (see mites and parasites)
  • Clean-up
  • Maintenance monthly
View Our Plan for Rats and Mice
  • Indoor / outdoor eradication
  • Bee removal – hive and honeycomb
View Our Plan for Bees and Wasps
  • Monitoring
  • Commercial reporting
  • Clean-outs and maintenance
View Our Plan for Roaches
  • Comprehensive inspection
  • Written bedbug plan for owner – pest company
View Our Plan for Bed Bugs
  • Remediation / maintenance
  • Ground fumigation
  • Baiting
View Our Plan for Gophers and Squirrels
  • Single story eaves only (we do not service roofs or second story homes).
  • Full exclusion for nesting and perching
  • Decontamination (see mites and parasites)
  • Bird birth control
  • Pigeons
  • Starlings
  • Sparrows
  • Swallows
View Our Plan for Birds
  • Attic vacuuming
  • Power washing
  • Insulation removal – replacement
  • Full space area chemical fogging
  • Off-site disposal
View Our Plan for Mites and Parasites
Pest Control Product Labels & MSDS We welcome you to view pest control labels and MSDS information.