White Grubs
White grubs — aka White Curl Grubs due to the fact that they are usually curled into a half-circle shape —are the larvae of a number of different types of scarab beetles. Once fully grown, these pests don’t bother your lawn much. During their larval stage, however, they feed on turfgrass roots, severing them from the blades of grass above. If you notice patches of lawn that are turning brown and are easy to pull up, check for white grubs by pouring a bucket of hot soapy water onto the affected area. The grubs should begin to come up for air within about 10 minutes. Treat the area with an insecticide formulated for grub worms in the late summer or early fall when the pests are not yet adults but live near the soil surface, ready to emerge.
Article source here: 10 Lawn Pests That Can Cause Problems
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