How do you get rid of caterpillars?

Hello. In a gallon of water add a few drops of dish soap and 1 tbsp. of cayenne pepper. Let sit for 24 hours, and then strain out any bigger pieces. Spray your plant with that, and let it dry on the plant. Reapply if it rains. Adding a bit of alcohol will help dry them out. Always test on a bottom leaf, for a couple of hours, before applying to the whole plant.