HELP! Flower people, can someone please tell me what is eating my dahlia petals and what in the world I can do about it? I've tried a soap and water solution and slating the plant with insecticidal soap to no avail. I don't see any evidence of slugs, the leaves aren't being eaten - just the blooms. Scroll left for other pics. My undying love and support to anyone who can give me some insight!!