Grubs can cause extreme damage to your lawn in a short period of time. My lawn last spring started getting the round brown patches that start getting larger and larger. When you pull on the grass stems they just come out of the ground as the roots have been eaten off by the grubs. You can see the white grub right under the grass and if you are unlucky they are everywhere. (Like mine was getting)
It is best to apply this product and water thoroughly within 24 hours of the application. This product worked perfectly on my lawn and helped to save my grass as the grubs were almost immediately gone. The lawn quickly recovered as this product not only kills the grubs but feeds and helps strengthen the grass roots.
Spring is only a short time away and if you have grubs you need to apply this from May to August. Local stores in my area ran out quickly as it seemed everyone had a problem so make sure you order it early.