The answer to 'why is my lawn pests' is that your lawn may be infested with various insects, weeds, or other pests that can damage the grass and overall appearance of your lawn. Common lawn pests include grubs, chinch bugs, moles, voles, crabgrass, and broadleaf weeds.
These pests can cause symptoms like discolored or thinning grass, dead patches, tunneling, or an uneven, unkempt look to your lawn. Lawn pests are often caused by factors like improper mowing, watering, or fertilization, as well as environmental conditions that favor their growth.