Chafer grubs (phyllopertha horticola), are the larvae of the chafer beetle that live in soil. They eat the roots of grass, causing yellowish patches to appear on the lawn. The chafer grub burrows holes through vegetation including lawns, resulting in large patches of bare brown grass.

Where do chafer beetles come from?

The European chafer beetle originated in continental Europe but is now an invasive species found in temperate climates in North America, where they are often called June bugs.

Should I kill chafer beetles?

When the larvae are small they do not cause much damage to grass unless they are in very high numbers. As they grow bigger, they cause more damage. ... The larvae can be controlled by removing them by hand or applying a biological nematode. Chafer Grub killer can be applied from late July until October.