The Food and Drug Administration has revoked the licences for two brands of mosquito coil after finding unregistered chemicals in the products. Tests found dangerous substances were imported from China for use in Ranger Scout coils and Ars Plus mosquito coil 1 products. Instead, there were three unregistered chemicals -- Bioallethrin, Meperfuthrin and Heptafluthrin -- in the coils. There had been no studies to decide the suitable amounts of those chemicals to use in mosquito coil products. To protect consumers, the FDA decided to revoke the licences for Ranger Scout and Ars Plus mosquito coil 1.

Source: Bangkok Post September 26, 2018 07:18 UTC