To try and get around these considerations, a few control principles should be kept in mind. One is that younger larvae are much more easily controlled than large, late instar insects. The optimum time to control white grub larvae is when they are young, shortly after eggs have hatched. For the annual white grubs, that time is now. What insecticide to use and how to apply it is the other consideration.
Important features are ability of the insecticide to avoid undue binding to organic matter.
Fair water solubility is also associated with good thatch penetration. Among the various turfgrass insecticides there is a wide range in these features. However, these are not generally available for home lawn applications, at least by non-licensed applicators. For homeowner applications, I recommend Sevin, with Diazinon being a secondary possibility. Watering can assist in performance of an insecticide application.