Just last week, I kneeled down to get a closer look at a weed and put my knee squarely in a fire ant mound. I swatted my pants leg and got all of them off without getting stung. It was a rookie mistake.
Despite our dry weather, fire ants are typically quite active in the fall, gathering up their food stores to survive the coming winter. This fall flurry of activity can give homeowners a great opportunity to greatly reduce their numbers come spring. The scarcity of food resources that occurs each fall makes the foraging fire ants much more likely to pick up insecticide baits and feed upon them all winter long.
Fire ants are native to South America. They entered the U.S. through Mobile, Alabama, probably in soil used for ships’ ballasts. They were accidentally introduced around the 1930’s and have been spreading since.
Red imported fire ants are very aggressive and efficient competitors. Since the 1950’s in the southeast corner of Texas, this ant has been spreading through Texas in all directions. They now fully infest the eastern two-thirds of the state, and most every urban area in west Texas. Perhaps the only area of Texas they may not get established is the panhandle, due to the panhandles dry weather coupled with cold winter conditions.
Some fancy terms that I heard some years ago about fire ants is that they are “thermo-regulatory” and “hydro-regulatory”. Indeed, they will often seem to disappear when they are just deeper in the ground looking for moisture and more moderate temperatures.
While the bad news is that they are a permanent problem, the good news is that, with relatively little cost and effort, you can prevent most of the problems they cause using currently available methods.
When applied correctly, baits will greatly reduce their chances of surviving the winter. As a result, landscapes can have significantly fewer fire ants (and their mounds) in the spring following a good fall control program.
Apply bait when no rain is expected for several days after treatment. Baits are slow-acting, taking weeks to months to reduce ant mound numbers. Unlike a mound treatment that is supposed to work quickly on each mound you find, baits can be taken back to work on several different mounds – even those you do not see. Their work is conducted underground, all winter long, slowly but surely reducing their numbers.
To maximize your effectiveness, work with neighbors to apply bait. Since fire ants frequently travel from yard to yard, team up with your neighbors to implement fire ant control programs at the same time. Decide what control method to use and find a sunny weekend to get it put out.
I’m cannot list all the products as there are literally dozens on the market that will do job. I do strongly recommend going to your local feed store or garden center and asking a knowledgeable manager for their product recommendation.
As always, be sure to use the product according to the directions on the label. There is a wealth of good information contained in the tiny print on the back of the package. Closely follow label directions. Today’s baits are gentle on the environment and are best applied using crank-type seeders or spreaders.
For more information on fire ant control and the latest research being conducted, go to the Texas Imported Fire Ant Research and Management Project at fireant.tamu.edu.
