How to drive away red ants?
1) Vacha powder
Vacha has been used in Ayurveda for a long time. It is also called dried sweet flag powder. You sprinkle fine powder of dried rhizome near walls, windows and sink-tap. Its natural strong smell keeps ants away. Always keep it away from children and pets.
2) Bhimseni Kapoor
This pure Bhimsen camphor releases its aroma for a longer period as compared to normal synthetic camphor. You can tie it in a small cloth and keep it in the kitchen cabinet, store room, under the sink and near windows and doors. This also makes ants run away.
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3) Patchouli Oil
Patchouli oil is known for its wonderful fragrance, which lasts for a long time. Putting a few drops of it on cotton and keeping it near ants reduces their chances of coming on the same path. If you want, you can also apply this oil on the sides of the walls and sink.