Trap diameter: 30 cm. Tree circumference between 0.7 and 0.95 m. Designed and manufactured in France. The ideal trap for killing pine processionary caterpillars. Efficient, environmentally friendly and easy to use, no insecticides or lures. Thanks to a mechanical effect, the caterpillars will be trapped in the collector at the bottom.Target pest:Pine processionary caterpillar (thaumetopoea pytiocampa).Pine processionary caterpillars have a sting due to their hairs.They also pose a danger to the health of humans and pets.In addition, they can cause significant damage to trees. Action: Eco-Friendly trap consists of a ring to be placed around the tree.It will constitute a physical barrier to the caterpillars that descend along the trunk of the tree.Their only path to the ground will lead into the collection bag. The caterpillars will therefore be trapped in the bag. At the end of May, you can remove the bag and get rid of trapped caterpillars. To get rid of trapped caterpillars, you just have to incinerate the caterpillars that have turned into pupae without opening the bag you can also throw it with your household waste making sure that the bag is tightly closed to avoid the risk of sting. - Packaging: The eco-trap consists of: a base ring, a backup ring, a downpipe, a collector bag, steel tape, sealant as well as other small accessories and instructions. The ring is available in 3 sizes: 30 cm, 55 cm and 80 cm. These diameters are all different so that the ring adapts perfectly to the trunk. Quantity to use: One trap per tree.