What causes grubs in the yard?

Grubs in the yard are typically caused by the larvae of beetles, such as Japanese beetles or June bugs, which lay their eggs in the soil. When these eggs hatch, the grubs feed on grassroots, leading to damage in lawns and gardens. Factors like overwatering, poor drainage, and compaction can create an environment conducive to grub infestations. Maintaining a healthy lawn through proper care and pest management can help mitigate grub populations.