Its Chief, Nor Azman, said they were assisted by personnel from similar units in Kota Kinabalu, Sandakan and Tawau and policemen during the raid after receiving public complaints.
However, no arrest was made.
According to him, the premises was suspected to have been operating without a licence since two years ago.
"The surrounding of the premises is quiet; the door is always closed and is equipped with Closed Circuit Television (CCTV)Éthey would only open if there's a demand and also when loading the pesticides into their customers' lorries," he said.
"Based on the information we received, their customers are from the estates and stores selling pesticides in Tawau, Sandakan and Lahad Datu," he added.
Azman said the premises is believed to have received their supply from the peninsula and suspected to have brought into the district illegally.
He said the seized items had been brought to the department's warehouse for further investigation under the Pesticides Act 1974, which carries a maximum fine of RM50,000 or two years' imprisonment, on conviction.
Hence, he advised those who have the intention to sell or keep such chemicals to have valid licences from the Pesticides Board.