It all depends on how severe the damage is. Sometimes, holes caused by Clothes Moth Larvae can be repaired by laundering the affected item and then sewing it back up. However, in many instances, moth larvae chew holes through woolen knit sweaters. When a knit garment gets a hole in it, it can start to unravel. If an item is severely damaged and cannot be repurposed, it may be time to toss it.