Bayer Advanced Lawn 24-Hour Grub Control rescues your lawn from active grub damage. Nothing kills grubs faster. Ready-to-spread granules. Quick facts: For use after first signs of grubs. Stops grubs from further damaging lawn. Degrades quickly. Easy-to-use granules kills white grubs, mole crickets and other listed pests. Coverage - This bag covers up to 5,000 sq. ft (white grubs, mole cricket) 7500 sq. ft (sod webworms, cutworms). Kills cutworms, white grubs (larvae of chafers and Japanese beetles), mole crickets, and sod webworms. Signs of damage to lawns: Grubs - White grubs cause extensive damage to lawns by feeding on grass roots. Grass turns yellow, then brown and dies. Grubs chew off roots so that the grass is easily pulled up in pieces with your hands. You can roll it back like a carpet to reveal the grubs. If patches of dead grass appeared in your lawn late last summer, check for grubs. Mole crickets - Mole crickets often cause extensive damage by tunneling through lawns. Some species also feed on roots. Tunneling uproots the grass so it easily dries out. Lawns turn yellow, become thin, weedy and can eventually die. Sod webworms and cutworms - Sod webworms and cutworms damage lawn by cutting blades of grass near the ground. Small brown patches will appear. Cutworms can also be seen in the lawn. Webworms nest down in the thatch layer, coming up to feed at night. How it works. Bayer Advanced Lawn 24-Hour Grub Control is intended to be used when insects and grubs area present. After granules are watered in, insects are killed on contact. The active ingredient then degrades quickly.