Thare are many organic fire ant conrol products. You can find them here with instructional videos and info:
I've recently discovered that a garden hose pipe on full power aimed at the top of the ant hill for a few minutes does the trick, I like to call it the "IndependANTZ Day" Method.
Regarding ants on lawn, several people have posted suggestions for undiluted white vinegar. I took this advice and I can assure you that this treatment will kill your grass very effectively but the ants don't seem to give a darn.
I received the following information in an email. I researched it and found that Eddie Rhoades is a master gardener and this is posted on his site.
Eddie's brother Robert Rhoades has discovered an
environmentally friendly cure for fire ants that has been announced by
Walter Reeves on his Georgia Gardener radio program. Testimonial that it
REALLY WORKS are coming in.
Simply pour two cups of CLUB SODA (carbonated water) directly in the
center of a fire ant mound. The carbon dioxide in the water is heavier
than air and displaces the oxygen which suffocates the queen and the
other ants. The whole colony will be dead within about two days.
Here's the good side: club soda leaves no poisonous residue, does not
contaminate the ground water, and does not indiscriminately kill other
insects. Each mound must be treated individually and a one liter bottle
of club soda will kill 2 to 3 mounds.
DO NOT BOIL VINEGAR if you want to be able to breath in your house. Boiling vinegar steam is a hundred times more offensive to the eyes and lungs than a whiff of cold vinegar. Voice of experience. Please heed the warning!
I have hundred of ant hills all over my property and they are killing the pine trees nearby, it would be difficult to use boiling water on so many.
Any other ideas for a large quantity?
I use cheap powdered laundry detergent and sprinkled it on the cracks when they surface after it rains. This seems to work really well.
Hi there, and so sorry to hear of your ant hill problem!! I used to get the BIGGEST ant hills. They were GIANT. The BEST thing I found was to pour a pot of BOILING water on the largest hill first, and then move down the line... I had 4 pots going at once. lol.. Make sure to let the water saturate the soil, as ant hills can kind of 'shed' some of the water. Do this THOROUGHLY one morning and then again that night, and you will be RID of all those nasty hills.
What could be more simple than BOILING WATER?? LOVED IT. It is now something I do each year, and kind of look forward to it, as funny as that may seem. It just works so well!!
Best of luck!!
I have fire ants in my compost bin, & I need something to kill them & not harm my compost.
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