Spidend
Application Make a hole in the lid and place the cup on the rock wool slab or directly on the soil Protect against direct sunlight and water Leave the cup in place [...] should be repeated at least 3 times at weekly intervals, or until the pest is controlled. Consult a Koppert advisor or a recognised distributor of Koppert [...] emerging from the pupa, adult gall-midges actively search for spider mite colonies and deposit eggs next to the spider mites . Once emerged, the larvae feed