I remember that instance that my father saw those insects that is always seen on pepper leaves. He bought Malathion, made a solution of half of the 60mL bottle in a bucket and started applying like drizzling water in a single pepper plant.

I was so furious because the smell fumigated the whole house. I mean the whole point of planting in the backyard was to avoid pesticides but my father without thinking about it just wasted money with that pesticide, nearly poisoned us, and I don't know what happened to the pepper plant.
Plus he is a plant whacker, plants don't survive much when he is caring for them. He killed my Passion fruit vine too :/ @ironshield