Of the black, red and yellow ants that are commonly seen in the garden, only the red ones (from the Myrmica species) sting. Other than that, ants are more of a nuisance than a pest. They feed mostly on insects, including other ants, and honeydew, the sweet sticky substance that aphids excrete. Ants are known to defend aphids against predators in return for a harvest of honeydew.

Solution:

Ants

Of the black, red and yellow ants that are commonly seen in the garden, only the red ones (from the Myrmica species) sting. Other than that, ants are more of a nuisance than a pest. They feed mostly on insects, including other ants, and honeydew, the sweet sticky substance that aphids excrete. Ants are known to defend aphids against predators in return for a harvest of honeydew.

Solution

Organic

Ants are persistent and it's almost impossible to eliminate them in the garden. You can flush them out from containers by giving the compost a thorough drenching with water. Repeat as necessary, although take care not to drown your plants!

Keep ants off the benches in a greenhouse by wrapping a grease band around each bench leg, or standing the legs on a block of wood in a dish of water. Use a stiff brush to remove ant hills in the lawn.
Chemical

There are many ant killer products on the market, but they are mostly more effective at killing ants that stray indoors, than complete nests in the garden.

0 Ways To Kill Ants… Organically

1. Baking soda is poisonous to ants, spinkle it around your plants to ensure ants will stay away.

2. Flour & Baby Powder will keep ants from reaching your plants, ants will not cross the powder – so circle your plants with it.

3. You can use coffee grounds, chili powder, cinnamon, peppermint or black pepper. All deter ants and if you pour coffee grounds directly on an anthill, they will eat the coffee grounds and implode.

4. Grits, instant rice & cream of wheat can be sprinkled around plants. The ant will eat a piece of whichever you sprinkle, drink water and the grain expands and kills the ant. :)

5. Fill a spray bottle with 1 part vinegar and 1 part water and spray on plants. The acid in vinegar will kills ants.

6. Mix together one-third cup of molasses, six tablespoons of sugar, and six tablespoons of active dry yeast into a smooth paste. Use the mixture to coat strips of cardboard. Keep out of reach of pets and small children. You can leave mixture on a saucer outside anthill and they’ll eat it and die!

7. Fold contact paper in half, with the sticky side out and make a circle around base of plant. The ants get stuck on the paper – problem solved.

8. Cut off the bottom of a paper cup and cut a slit up the side of the cup and coat outside with vaseline and place around base of plant. You can also use packing tape.

9. Mix one cup of borax, two-thirds a cup sugar and one cup water. Dip cotton balls in the solution and place in areas near your anthill Ants will leave the plants alone and ingest the sweet mixture. The borax kills the ants.

10. Diatomaceous Earth is a commonly sold organic pesticide that will destroy the insects outer skeletons, causing the pests to die from dehydration.

More of this topic in the link below:

ant control west auckland

Author's Bio: 

Graeme Stephens has been running the largest owned carpet cleaning company in new Zealand for 24 years. IICRC qualified "master restoration technician"