Chafer Grub

The Cockchafer (May Beetle) and the Garden Chafer Grub are to lawns what the dreaded Vine Weevil is to container gardening, a nightmare.
The grubs are the larvae of beetles and live just below the surface feeding on the grass roots disconnecting the turf from the soil surface. When the population gets high birds come in to feed on the grubs tearing at the loose turf, as can be seen in the photo above.

Joss has applied a granular pesticide 'Merit Turf' to the whole lawn, not just the area of damage, in order to try and eradicate the grubs and break their life cycle. The lawn will then be watered over the next few days to push the pesticide through the thatch and into the root zone where the larvae feed.