Dealing with grubs in a lawn is not terribly difficult once you have clear in your mind their life cycle. The grub is up near the surface, under your grass, in late spring and then again in late summer/early fall. During that time you use a tool that can get to the grub when it is underground.

When the grub hatches into a beetle, that beetle is vulnerable to control using tools that kill pest insects above ground. See the file Controlling Japanese Beetles for more information about dealing with the grub in its adult stage.

The solutions discussed here all attack the grub when it is in its shallow underground stage.