Summit Biological Caterpillar and Webworm Control is not labeled for turf application. Dylox would be great for a quick kill.
For best results, Summit Biological Caterpillar and Webworm Control should be applied when sod webworms are small and they must be actively feeding on treated, exposed foliage.
We would suggest contacting your local cooperative extension office for the best time to treat for sod webworms in your area. Adult cutworms lay their eggs in the spring and larvae emerge and begin feeding as early as June with damage appearing in June/July.
You can use a Bt product such as Summit Biological Caterpillar and Webworm Control if you are finding caterpillars on the plants. If there are an adult stage insect such as scale or mealybugs, then this would not control those insects.