Six people were arrested in Busia County on Saturday during an operation against unlicensed video show outlets.
The crackdown was by officials of the Kenya Film Classification Board (KFCB).
The board has accused the owners of the outlets of showing obscene content to minors, especially during the festive season.
KFCB Western region boss Lameck Omingo, who led the operation alongside police officers, revealed that Busia and Bungoma are the most notorious counties when it comes to this offence.
The regulator said it will carry on with the crackdown until each operator adheres to the law.
“We will not relent until there is some level of sanity in the region for the sake of the young generation,” said Mr Omingo.
He urged those in the film business across the country to comply with the board’s requirements.
“Failure to comply attracts a fine of Sh100,000 or five years' imprisonment," he said. "These are the same people who expose pornographic material to children for the sake of money."
The raid followed complaints by residents, who said their children were being subjected to dirty and unrated content.