I’ve tried these granular products for regular ants - after using the whole can I found no decrease in ants.
Real grits works better and is far less expensive. When they land on some ground and start another mound, just sprinkle a little around the mound not getting any on it. The workers take it into the mound for the queen to eat and when she does, it grows so much that the queen explodes.
The only thing I’ve tried that works is Ortho Orthene Fire Ant Killer.
Whenever I open a bottle of it, I feel like I should be wearing a hazmat suit.