How do chinch bugs affect turf grass?

Chinch bugs affect turf grass primarily by sucking sap from the grass blades. This feeding behavior disrupts the plant's ability to transport water and nutrients, leading to stress and damage to the grass. As they remove sap, the turf can start to show signs of wilting, yellowing, and, eventually, dying patches. This specific method of feeding is particularly harmful to the grass, as it directly impacts the plant's health and vitality.

The other options do not accurately describe the main impact of chinch bugs. For instance, while some pests may dig up roots or consume grass seeds, chinch bugs do not engage in these behaviors. Additionally, laying eggs in the soil relates more to their reproductive cycle rather than their impact on the grass itself. Understanding the correct way chinch bugs damage turf is crucial for developing effective management strategies.