Another summer fighting these bugs. I have just about decided to dig up the bulbs and not grow them next year Just is to much effort when there is so much else to do in the garden And I am getting older. What I have been thinking I might try, as a last resort, is dig up the bulbs, a little later in August perhaps, (I have been stripping all the leaves off the stems, now trying to rid myself of this problem) It doesn't work though But I was thinking that I might dig up some of my best lilies, and I have some beuties, my favourite is Casablanca, but dig them up and put them into a couple of large and I mean large black pots, of which I have a couple extra, Putting new bagged soil in the tubs leave them out in the sun and rain for a couple of weeks or so or til frost and then store them overwinter in the garage, til spring. I have this year a couple of lilies growing in pots from last year, with a mixture of other perennials and annuals and they do not have the lily bug on them So could be worth a try any opinions?

Is this a Hardy Hibiscus ? Do you have sawfly in your area? What does the eating pattern look like?

You can spray it with Neem Oil and Safer 3-1 Insecticidal soap, at least that is what I do. You can also utilize beneficial insects; I do that, too. It is just a leafhopper and there are many types and colors of them out there. http://www.planetnatural.com/product-category/natural-pest-control/beneficial-insects/ is where I go, not a shill for the company. I have had good success with the beneficial insects, personally. Unless you get a massive infestation, I would thin that your plants will do okay, perhaps not a finalist for best looking. I have maybe 10 pepper plants and 4 or 5 eggplants that have parts of leaves eaten off and they all bear fruit. If you notice any moths hovering in the area, take note of the color. That may help you to identify what type of caterpillar you have. I had some white with three blacks spots and brown ones with orange on the wings. I used the trichogramma wasps for 4 weeks straight and barely notice any of the moths or the damage they are noted for as caterpillars. Ladybugs will eat them and aphids but you need to wait several weeks after the Neem Oil is used and there needs to be enough of them otherwise they fly away to a more plentiful buffet. If it is just minor amounts of leaves, try the Neem Oil and Safer 3-1. Dilute as recommended and spray every 4-5 days and after rain. Try to get tops and bottoms of the leaves as much as possible. Hope it all works out for you.

I agree with esox07, I would not treat for bug damage until you identify and its persistent damage to the plant to make it necessary to treat it and from the looks of it it could just be a passer by grabbing a snack and moving on. Another reason rouge debris from rain storms could damage leaves.