Observation notes: These caterpillars stripped one ofmy milkweed I had planted in my garden for Monarch caterpillars and are working on other milkweed plants. I am so glad I had already taken several caterpillar eggs off of the milkweed 2 days ago. I have never seen these before and there were several of them. I don't particularly like what they have done. Is there a way to prevent them from doing this.