We put Borax in the cracks about the kitchen to feed the ants. They carry it back to their nests, they cannot digest it and they die. We seem to go for 1 to 1 1/2 years without being bothered by them now.
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I had a bad infestation of ants a few years back. I live in an old house and they came up through the heater registers on the floor. I didn't want to use poison since I have a dog and was concerned he would sniff at it, lick it or otherwise ingest it. So I scoured the internet to find a non-toxic method to eradicate them. That 's when I came across the baby/talcum powder treatment. I poured a line about 1/4 inch think all the way around the heater registers. After killing and cleaning up the ones that were already in the house (4 hours with 2 people working to get rid of them) the ants were gone and never came back. I left the powder there for a week just so they wouldn't come back. My house was ant free for almost 6 years but they are back now, coming in through the wall sockets so I will try the vinegar or perhaps Windex as I've heard both are effective. Thanks to all who have posted!
In a house we lived in a few years ago, our mail carrier used to give my children lollipops all the time. If one happened to get left outside (opened) I would see it another day - black with ants. Ants love lollipops!
So, since we always seemed to have a lot of them (lollipops) around, I used some to make ant traps one time when we had a bunch of ants come into the house.
I put an unwrapped lollipop in the middle of a lid. I put boric acid (found at the hardware store, usually used for roaches, though I have always used it for ants - I have had the same container of it for 25 years!!! ) all around the inside edge of the lid. So, ants had to walk through the boric acid to get to the lollipop. I would leave that alone for days. Ants would come and feed and leave with boric acid on their feet.
After a few days, I would stop seeing any ants. Be warned, at first it would seem the problem was worse, but it always got better and the ants would stop until the next spring and I would repeat the process (not always with lollipops, but always with the boric acid! )
I have heard of mixing coca cola with boric acid to accomplish the same thing. I just was more likely to have lollipops than coke around the house!
~Mama to Many~
I have read that if you sprinkle quick cooking grits on regular or fire ant hills, the workers will carry it home to feed their queen and eat one themselves, causing them to swell up and burst. Ants who died from this should not be harmful to any birds who eat them."
I rarely see this, but it works every time! On an ant nest, or across the ant's trail, simply apply lemon juice. The store concentrate seems to work as well, also. I have never had to apply lemon juice more than twice to eliminate large ant populations. A bonus is that this remedy has no toxic effects for your pets.