Black ants have appeared in my field with three plants! They are beasts! I have never seen anything like that!
They started capturing it with one little spot. I thought I would let them live, it was in half a meter from my plants. They didn't touch my plants and killed insects, including huge carpenter ants (there were real battles between a dozen of these huge ants and a dozen of black ants).
But when I visited my field, I was shocked. This is some fucked up shit! They managed to dig up half of the field around the plants and kill tons of earthworms... They are everywhere!! My plants have become a little bit weak. Maybe, I am just freaking out, but it seems like a disaster! I have never seen such ants' behavior. They usually come and settle in one place. I have never had problems with them before, we lived peacefully together, but now...
What am I to do with them?? There are plant lice on one of the plants, as I understood. I will treat the plants against lice, but they have arranged excavations there!
Spread some diamotacious earth around and kill them all plus it will help your plant
take white bread+water+boric acid=make balls and scatter around, these guys will move to other places.
And if you have cockroaches nearby, they will also follow the ants:)
Cut several garlic cloves into pieces and cover them with 1 cm of the soil around your plants.
It is better to put garlic in the places where ants lay their eggs.
I tried it out myself, and it is the simplest and the most effective way that I found.
They will go away in 3-4 days, if not, repeat this routine again.
It is also possible to use chili pepper, but I didn't try it.
Diatomaceous Earth is a natural compund from fossilized anaimals at the bottom of lakes, it is soft on the hands but kills insects on the touch for the simple fact it dehydrates the shyt out of them, put this around a perimeter of each plant and bury it a bit an inch or two , this should be able to help, and for next grow mix it in with the soil and you wont have to worry, and also use it as top soil as well, hope this works.