June bug treatment
You mentioned Sevin as a treatment for June bugs but you did not indicate what time of year to do the treatment. When is the best time to kill off the grubs?
Certified GKH Gardening Expert
This article has more information on killing the grubs: https://www.gardeningknowhow.com/plant-problems/pests/lawn-grubs-how-to-get-rid-of-grub-worms.htm