Treat
your yards and neighborhood this spring for fire ant relief this summer and
fall. Fire ants love to nest in home
lawns, parks and ornamental turf grass areas. At certain times of the year,
freshly worked mounds are noticeable and can be unsightly. During the winter
months, there’s very little ant mounding activity and it is easy to forget they
are there.
However,
after all of the early spring rainfall, fire ant activity has increased. It is during these times when the ants are
very active and can cause more problems especially when everyone wants to be
outside after being indoors all winter long.
The last thing you want at your outdoor activity is a colony of angry
fire ants ready to take over and turn your happy occasion into a miserable
one. Did you know that the fire ant is a
native of Brazil, and was imported from this country through Mobile, Alabama in
the 1930’s?
Don’t
wait until you have serious ant problems. Keep those problems from happening by
maintaining a good control program throughout the year. Fire ants travel from yard to yard (they
could care less about property lines) and are easily dispersed due to periodic
mating flights. Did you know that the
fire ant queen lives for 2-5 years and can produce up to 800 eggs per day? Also, remember a high percentage of the
mounds in Texas have multiple queens, meaning there is no territorial behavior,
resulting in excessive numbers of fire ant mounds per acre or in the homeowners
case, per yard! Because most of our
mounds have multiple queens, and may be spread over larger areas than we
actually see, just sprinkling a product over the top of the mound may not
reduce the entire population. In areas
where fire ants produce more mounds than you care to treat one at a time
(usually more than 4 in a normal yard), or where you spend more time and money
on insecticides than you would like to, there is an approach that is less
labor-intensive, less toxic and more environmentally friendly. It is called the Two-Step Method,
Do-It-Yourself Fire Ant Control method. It is advocated by the Texas A&M
AgriLife Extension Service. You can obtain a copy of the most recent fire ant
management brochure (ENTO-034) by visiting the Texas A&M AgriLife Bookstore
and download a copy. http://www.agrilifebookstore.org/Two-Step-Method-and-Other-Approaches-to-Fire-Ant-p/ento-034.htm.
The Two-Step Method goes like this:
The
first step is to make a semi-annual, spring and fall, broadcast application of
a fire ant bait insecticide. There are several fire ant baits available for use
in urban areas such as hydramethylnon (Amdro), methoprene (Extinguish),
hydramethylnon + methoprene (Extinguish Plus or Amdro Yard Treatment),
pyriproxifen (Distance or Esteem), and spinosad (Ferti-Loam “Come and Get It”
or Payback fire ant bait). Other
products can be found on the official Texas A&M Fire Ant web page, http://fireant.tamu.edu/controlmethods/products/.
Please consult the product
label and read thoroughly for the broadcast instructions!
Periodic
broadcast applications of fire ant baits provide roughly 90 percent suppression
of fire ants when properly applied.
Baits can be broadcast over small to large areas using suitable
hand-held, vehicle-mounted or aerial applicators. Apply a fresh bait product,
when ants are foraging, to dry ground when no rain is expected for 24 to 48
hours after treatment. Temperature
should be between 65 and 95 degrees Fahrenheit.
Speed and duration of ant suppression differs with the product
selected. For instance, broadcast
applications of the hydramethylnon + methoprene fire ant bait provides maximum
control two to four after application while methoprene fire ant bait (an insect
growth regulator product) provides maximum suppression four to nine months
after treatment, depending on environmental conditions. Rarely are all colonies eliminated following
treatment. Bi-annual applications of the bait product keeps pressure on the
fire ant population so each subsequent baiting event is much more effective
since less ants are present.
About
one week to 10 days after bait application, apply individual mound treatments
to “nuisance” ant colonies, such as those in sensitive or high traffic areas.
Otherwise, be patient and wait for the bait treatments to work. Even though
some bait products are relatively fast-acting, colonies remaining active after
six weeks or so have “escaped” the effects of the bait treatment and should be
treated with an individual mound treatment. Ant mound treatment products are
available as liquid drenches, injectable aerosols, dusts, or granules that are
watered in to the mound. Ants are killed only if the insecticide contacts them,
so proper application is essential.
Colonies migrating into treated areas should be treated as needed. Hundreds of effective individual mound
treatment products are available to choose from, and a number of them are considered
to be “organic.”
For
a two-step program that uses only natural products, broadcast a spinosad bait
and then treat mounds with d-limonene or products containing unsynergized
pyrethrins or drench with a spinosad liquid product solution. On small properties where a high degree of
control is needed, consider using the “Ant Elimination” method (described in
ENTO-034) utilizing a granular fipronil product such as Top Choice®, or Taurus
G®. These are restricted pesticide
products and can only be applied by a licensed pesticide applicator. Only one
application is allowed per year preferably early spring.
None
of the methods of fire ant control available today eliminate fire ants
forever. The bait application may be
repeated, if environmental conditions are favorable, whenever sufficient
re-invasion occurs. Between these
baiting treatments, nuisance mounds should be treated individually. These areas
can be re-infested by colonies migrating in from surrounding areas or by
newly-mated queens seeking to start new colonies. The rate of re-infestation
depends on many factors such as weather, soil type and moisture, but ant
populations can be expected to fully recover within 18 months of the last
treatment.