Grubs can significantly harm your yard by feeding on grass roots, leading to brown patches and dead areas. Their presence can attract wildlife like skunks and raccoons, which dig up and search for larvae, causing further damage. Additionally high grub populations disrupt soil health, affecting fertility and compaction, while the overall aesthetic of your yard will suffer and require fixing. We put pre-emergents down for grubs with your 3rd treatment early in the summer to prevent grubs.