The Ogun State Waste Management Authority has sealed off two Chinese companies for allegedly contravening the environmental laws of the state.
In a statement on Sunday, the Authority said it took the action after several warnings to the companies fell on deaf ears.
The government said the companies also refused to engage accredited waste collectors to properly manage their waste.
The companies are Yibao Industrial Limited located at Bara Village along the Sagamu-Abeokuta Expressway and Ronchang Industrial Park, opposite Julius Berger yard Lagos-Ibadan Expressway.