In my yard, and in cracks on the driveway, I had some ant problems. I don't have the nasty ones you have in AZ, but never the less, I don't need extra ants. I took my box of borax, and a spoon, and
generously dusted over all the ant hills, and such. It worked better than I expected.
In previous years, I would use granular Diazinon , and bury some in cavity next to ant hill. I did not want any other wild creatures being affected.

so that is reason I buried it into ground. It did control the ants.
I no longer use pesticides or herbicides anymore.
Borax is not a toxic substance, and the way it works, on ants anyways is; Ants will clean off their bodies. They ingest some of the borax powder. A gas develops in their digestive track. (fart gas), Ants are not able to express a fart, so they expire.
I have used a mixture of borax, and powdered sugar as bait inside the home. I also use this much.
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It is boric acid, and sweetener conveniently in one. This is good for small areas. The borax powder is very reasonably priced, and used outdoors does not break the bank.
I use fly bait traps with much success every summer. I have some home made versions, that I make from empty clear apple juice containers/bottles. Have 3 going now in my chicken area. The 2 that have been there a while, are filled with maybe 5,000+ , flies each. I used purchased fly bait. The 3rd, I had no bait left, so I do my home version. I took some dry cat food, (about a tablespoon) and added it to the water. It takes that about 3 days to kick into gear, but works well then. The purchased baits work like instantly as soon as they dissolve.

I can post pix if anyone needs to see my method.
I like making my own and they cost me almost nothing. Farm stores do sell their versions for about $15+, and the disposable ones from Walmart are about $6.
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