Yellow crazy ants

[Leafmite]

If you have any idea where the queens are located, you could pour liquid Sevin into the egg-laying locations to eliminate them. This would require observing the ants or hiring professionals to find these locations. As it IS a contact poison, if you have frequent rain, it will need to be applied after each rain until the ants are gone.

I am not a fan of using pesticides but, sometimes, it is the only solution and Sevin tends to be ground zero for everything but spidermites.

Ants are very difficult to eliminate because they easily migrate. If you are fortunate to eliminate the ants from your property, you will need to continue to do all you can to prevent new ones from replacing them.