yet desperately in need of a practical solution: the oak processionary caterpillar The French town Guénange has now launched a drone programme to help reduce health risks that can be traced back to the caterpillars occupying the nearby forests The insects' hair can be especially dangerous for human beings and animals alike The newest gadget designed to fight this enemy is a 24 kg drone which is able to spray a bacterial solution (not harmful to animals or people) The agent turns into a toxic crystal once it comes into contact with the caterpillar The municipality of Guénange in the Moselle department has been fighting the oak processionary for several years since it had developed into a problem for its citizens The initiative has been conducted by Agrobio Tech since 2019 The French national institute for agronomic research has been supervising the project from the outset This year's undertaking was once again watched closely by the town's population While the first deployment of the drone had cost the town 70,000 euros in 2019 the current undertaking will be priced at 40,000 euros The bacterial solution sprayed by the drone yet needs to be fully homologated by French authorities if results from this year's procedures turn out well From mid-September until the end of October renovation work on the A31 will take place in eight different stages Over the course of the next six weeks the signs above the carriageway in Guénange Entrange and Kanfen will be renovated by the French roads agency Every time a part of the A31 motorway will be closed overnight The competent agency will organise deviations The first step in this renovation process will start this Monday 18 September and last until Wednesday 20 September The signs in Guénange will be replaced from 9.30 pm until 5 a.m The second stage of these renovation works will also take place during September this time from Monday 25 september until Wednesday 27 September Six more stages will then take place throughout the month of October where again the motorway will be closed overnight.