My wife is always complaining about these ants. We can never get rid of them. They are super small ants.....just bout the size of a grain of sand. Never seen them that small before. They do not sting, they are black. Sprinkled these dry pellets around the house perimeter. Sprayed home defense around the house perimeter. Used those plastic stakes in the yard. Used those round discs in the house. Powder poison in all the cracks and crevasses. Dont know what else to do. Help my marriage depends on it : )