Final answer:
The question is likely misinformed as Bostrichid, Anobiid, and Old house borer are types of wood-boring beetles and do not make grass powdery and gritty. Powdery and gritty grass might be due to a fungal issue like powdery mildew, not the pests listed.
Step-by-step explanation:
The question you're asking seems to be related to pests that affect grass or other plants. Based on the information provided, none of the options listed (Bostrichid, Anobiid, Old house borer) are directly associated with causing a powdery and gritty substance on grass. These terms are typically used to describe types of wood-boring beetles, not grass pests. For grass issues, pests like brown planthoppers or whiteflies may be relevant, but they do not cause the grass to become 'powdery and gritty'. That description might refer to a fungal issue such as powdery mildew rather than an insect pest. It is important to accurately identify the pest before proceeding with any control measures.