We’ve noticed we don’t find monarch caterpillars on milkweed plants that have ants on them. We’ve also noticed if ants start coming on a plant with a caterpillar on it, the caterpillar disappears. It doesn’t seem to show up on a neighboring milkweed plant either.

I’m wondering if anyone has a way they keep ants off these plants so the caterpillars can continue their life cycle in peace.