(AFP) The lawyer for a California groundskeeper dying of cancer urged jurors Tuesday to make Monsanto pay hundreds of millions of dollars for failing to warn about the health risks of weed killer Roundup.

“Today is their day of reckoning,” attorney Brent Wisner told jurors as he urged them to impose a penalty of more than $400 million on Monsanto for hiding the cancer-causing potential of Roundup and commercial strength version Ranger Pro.