@Jim41, I'm orginally from Louisiana & now live right over the state line in Arkansas (about an hour from Shreveport). Small world!!!!
I have used the grits & the hot water & they work for awhile. When there's alot of rain it brings them back, I'm guessing due to flooding their tunnels. Like the Africanized bees, they kill the native species, are more aggressive, & serve no purpose (in my opinion).
I use FOOD GRADE Diatomaceous Earth (DE) for myself & my dogs (until I ran out & keep forgetting to get more). Months ago I sprinkled some on a large mound. I haven't seen any ants but I'll sprinkle more just to be on the safe side.