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You will find Argentine ants mostly in southern United States and in
California.
You won't find winged forms because mating usually is found in
the nest. Argentine ants are aggressive, often eliminating other types
of ants in the same area.
They also destroy and eat other household pests such as cockroaches and
exposed termites.
However, they prefer sweets and are often found tending aphids or scale
insects on plants,
using them as source of honey dew. They usual habitation is outside, but
can present a problem
when they come inside foraging for food.
They rarely nest in walls of buildings, as the pharoah ant.
They more often than not, enter to forage and then exit.
APPEARANCE:
The wingless
worker ant(most commonly spotted),
is light to dark brown, about 1/12 to 1/8 inch long .
The antennae are strongly elbowed(12 segments) and there is a single node
in front of the abdomen(a waist).
Queens are 1/6 to 1/4 inch long.
REPRODUCTION AND LIFE CYCLE:
The eggs are white,laid in summer;larvae emerge after about 28 days.
The larval stage may be completed in from 11-60 days.
The pupal period may go to over 10-25 days.
Development from egg to adult usually takes about two months,
but it may be 4-5 months.
During the summer months,satellite nests are usually established close
to food sources and these satellite nests are highly mobile.
ANT TRAILS:
An excellent
article(click on the PDF button-the top right corner of the document)by
Univ. of Florida Extension Service can be found at Ant
Trails:Baiting..
It gives an overview of management with baits.
WHY ANT BAIT?
The use
of residual sprays or dusts will cause stress on the colonies,
causing them to split into sub-colonies that scatter to other areas in the
structure.
This is also called budding.
After spraying, your problem can be worse than at the beginning.
When you bait, you will want a slow acting bait.
Quick kill insecticides and baits will only kill the foraging ants,
not allowing the foraging ants to take the bait back home to feed the
queen,
nest workers and brood.
If the current ant bait that you are using is not acceptable to the
ants,
if they are not visiting the bait,
it is recommended that you change the baits. Ants require carbohydrates-sugars,
proteins and greases.
They find a variety of these sources in nature. Examples are: other insects(proteins
and greases), nectar, aphid honeydew ,
plant products(sugar and carbohydrates)
Choosing a bait would require knowing what they are currently feeding
off of,
according to the nutritional needs of the colony.
To be sure that you have all the baiting needs met,
you may want to be ready with a sugar-carbohydrate bait,
a grease-fat bait, and a protein based bait.
IT IS VERY IMPORTANT TO REMOVE ANY OTHER FOOD COMPETITION WHEN BAITING
AND LEAVE THE BAIT ALONE ONCE THE ANTS START FEEDING ON IT.
HABITS
Argentine
ants can persist in conditions where
other ant species could not survive.
They like to nest in moist soil next to buildings or under them.
They can be found near sidewalks or plants.
They nest near water and food sources.
Foraging ants will enter the house when outside conditions
are extremely dry or wet.
Colonies are large, often containing hundreds of queens.
The queens and larvae form will eat the protein / grease combination
almost exclusively, while the workers will eat
the sugar based baits.
They are extremely mobile, will move colonies frequently.
Argentine ants generate strong pheromone trails when foraging. They
can be easily tracked. In many areas, you will see them pathing three
and four abreast.
DIET
Argentine ants prefer sweet foods such as syrup, fruit juices or plant
secretions as well as protein. They gather food day and night.
The workers will only eat the sugar. Of all the smaller sized ant,
this one prefers sweet more than protein.
RECOMMENDED PRODUCTS AND TREATMENT
Baiting
is the preferred treatment over typical residual spraying,
so you can eliminate the entire colony. Argentine ants generate strong pheromone
trails when foraging. They can be easily tracked. In many areas, you will
see them pathing three and four abreast.
The recommended products for the protein
and grease eating cycle would be:
The recommended products for the sugar eating
cycle would be:
FOR SMALL SIZED ANTS (feeds all the dietary needs:protein,
grease and sugar)

Maxforce Ant Bait Kit
Complete Ant Bait Kits: Small
- Perimeter treatment with a long lasting residual sprays such as Suspend
SC or Demon WP can at times prevent them from entering structures
SUSPEND
SC or
DEMON
WP