ON BEHALF of Torfaen council and Bron Afon, I would like to reassure readers that the weed killers we use in Torfaen (see letter ‘Spraying danger,’ July 15) are fully approved by the Chemicals Regulation Directorate for use in public areas. They have been the subject of rigorous testing and found not to pose a risk to animals, humans or the environment. As such, there is no need to cordon off treated areas, and the public have no need to worry should they come into contact with a treated area.

Councillor John Cunningham, Executive member for neighbourhood services, Torfaen County Borough Council