What Type of Insecticide to Use to Kill Red Horned Caterpillar

I live in south Orange County in CA & my pepper plant has been attacked by a pair of red horned caterpillars two different times. How can I protect my babies?

Pepper mom

PS:- Can I spray something around the pot so that they cannot cross that to reach the plant. I have tried growing Thai chillies from seeds & as soon as my chillies came on the plant, 2 red horned caterpillars came and cleaned out all the fruit and the leaves! I found one on the plant and the other on the ground. I sprayed insect killer spray on it to kill it, but I lost all my pepper and its leaves! Of course, new leaves have come up now, but how do I protect it?

HELP

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1 Comment To "What Type of Insecticide to Use to Kill Red Horned Caterpillar"

#1 Comment By AnnsGreeneHaus On 08/14/2013 @ 10:25 pm

One of the most effective ‘organic’ products to control caterpillars is Bt. Be advised, this usually only works on caterpillars. Use according to package directions. An article is attached: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/using-bacillus-thuringiensis.htm ^[1]

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