Bob from Lancaster, Pa writes
Treating for grubs can often vary from region to region and can change with the weather you have each season. We have provided a link below with information on timing and grubs in PA from the Penn State Master Gardener Pest Management program. If you have additional questions you can always contact them or us at any time. Home Lawn Grub Control in PA http://ento.psu.edu/extension/factsheets/pdf/whiteGrubsHomeLawns.pdf
Answer last updated on: 10/28/2013