I have quite a few lilies planted in my garden. Every year these red oval shaped beetles attack them. First they mate on the the lilies, lay their eggs on the leaves/stem, then they eat every leaf off the plant-so it's naked. Luckily they don't touch the flower but the plant looks kind of silly with nothing but a stem and some petals. I have tried different pesticides to kill these beetles but nothing seems to work. I would like to know if anyone else has had trouble with these pests. How did you get rid of them and do you know what kind of beetle they are?