Despite these newest results the EPA refuses to set strict limits of glyphosate in food.
Of the 21 oat-based cereals tested, all but four tested contained a level of glyphosate that is higher than deemed safe for children by scientists at Environmental Working Group.
Several outside scientists have identified other factual errors in the paper, and said they threaten to undermine the credibility of the findings overall.
Miami now joins Miami Beach and Stuart, two cities in Florida who have also banned glyphosate.
"Due to glyphosate's many health risks and its ubiquitous nature in our food, water and alcohol, the use of glyphosate in the U.S. should be banned unless and until it can be proven safe."
"Our analysis focused on providing the best possible answer to the question of whether or not glyphosate is carcinogenic. As a result of this research, I am even more convinced that it is."
"Just as tobacco companies can no longer talk about the health benefits of smoking, the chemical industry shouldn't be able to write its own authorization for its own potentially harmful products."
While Bayer continues to argue that there is no correlation between glyphosate and cancer, the second trial out of around 9,300 pending lawsuits will start in February.
The Environmental Working Group (EWG) announced Wednesday that tests it commissioned found glyphosate, the active ingredient in Monsanto's Roundup weed killer, in nearly 30 General Mills and Quaker brand products made with conventionally-grown oats.