Stop spending money and energy trying to get rid of grubs.
Grubs are always around but most lawns are not troubled by their grubs.
There are better ways to improve a lawn. Fix the non-grub issues that actually cause most turf trouble.
You don't really want to know the nitty gritty of grubs. That's OK. The summary on this page is enough. (Or, click here for all the dirty details.)
What you want is a better lawn. You assume grubs are to blame. Yet you probably do NOT have grub trouble.
Third, consider some surprising grub facts.