Dang, don't have those around here... yet.

I thought maybe a bad grub problem as well, but don't see any skunk activity as evidence. If it is grubs, then applying Milky Spoor works well for long-term control. I have a bad grub problem this year, but that is the best time to apply Milky Spoor as it is a fungus that needs the host to thrive and get established in your soils. Once established, the natural control can last for many years as long as grubs keep trying to make inroads and "feeding" the fungus.