Tree specialist Wolterinck: Control of oak processionary caterpillar with Entonem
sprays the nematodes when the caterpillar egg casings begin to emerge. A second spraying may be needed, either of nematodes or of nematodes plus Bacillus [...] continues, ‘The product has a guaranteed firm, preventive effect, it’s a 100% natural and it helps preserve biodiversity.’ [...] preferred method over products based on Bacillus thuringiensis , which can only be used on trees with leaves. Nematodes are a better solution for urban areas