How can I get rid of and prevent ants coming up through my patio stone
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https://www.gardeningknowhow.com/plant-problems/pests/insects/get-rid-of-ants.htm
Following this for answers since I have the same issue. Ants ”bubble” up by the thousands, in big piles. So gross! I have tried ant killers but that doesn’t get rid of the nest under the patio. I have also sprayed nematodes for ants but it only slowed them down for a very short time. My patio is a poured cement slab about 5 inches deep and 10x10 feet. There is no lifting that thing. Would love to get the original owner here to get rid of it, haha.
Hi there, I've heard that sprinkling corn meal around will kill the ants without hurting anything else.
Corn meal did not help my situation at all ☹️
I once lived in a newly built apartment that had apparently been built over an ant metropolis. Here's what worked to kill the nests. I made a tasty treat of peanut butter, white sugar, and borax (the kind you find in the laundry aisle). Roughly equal amounts of each. Add enough borax so it is crumbly, about the texture of corn meal. I use about two tablespoons of each ingredient, but I don't really measure it. Put it in a shallow container in a convenient location for them, and step back. The ants will come out to get this, and you need to steel your nerves, because you mustn't kill them at this point. They need to go home with it. It's take-out. Check it frequently. For a big nest, you may need to make more a couple times a day at first. They don't seem to like it stale, unfortunately. This isn't quick, but it does work.
I spray them and any mounds with carburetor cleaner. It attacks the exoskeleton. Kills them all.
sprinkle on then sweep/brush into the patio cracks some cheap cinnamon powder. They will avoid it and it's non toxic for us.