How do i destroy the crane fly larvae?
The birds should do the job. But if you have an infestation where they and the birds are messing up your lawn, the treatment is best done in the spring. The recommended choices for home gardeners include the use of beneficial nematodes or insecticides, available at lawn and garden stores. Fall (October) or spring treatment is recommended as best. Keep in mind that birds are important predators of crane fly larvae. Take great care not to poison birds if you choose to use insecticides.