Water flooding may work to make them move. Or you could use diatomaceous earth.

Pour orange juice on the mound (can be the natural, bottled type)and scatter orange peel that you have ground in the food processor on and around the carrot patch. This will move them out of the area.

I'm going to try both the water and the orange juice thing. Thanks for your help.

The citrus fruit works pretty well but I experienced that it takes several treatments. Bury the fruit in the mounds and pile it on top. You can also add some pure lemon extract mixed with rinds and water. It took four treatments on the mounds in my garden.

I found that the water trick works, however, the ants only distributed themselves elsewhere in the yard with even more mounds than before.

I now throw all my coffee filters, grounds and citrus rinds into the garden rather than compost them. So far no ants have returned. My plants seem to not mind it.