laurel trees

Question

All the leaves on my laurel tree are being eaten away by little white mites.

Answer 1

These could be a scale insect. Some scale insects are white in color and attack laurel:
https://www.gardeningknowhow.com/plant-problems/pests/insects/control-plant-scale.htm

Whiteflies can feed on laurel and might be what you're seeing:
https://www.gardeningknowhow.com/plant-problems/pests/insects/whitefly-control.htm

Spider mites are a pest that can feed on laurel trees. They don't typically appear white though.