Taste the rainbovine.

Hundreds of thousands of red Skittles that spilled on a country road in Wisconsin led cops to discover that farmers have been feeding the candy to cows for years, CNN reported.

The sweet treats fell from a truck hauling them to a cattle ranch in Dodge County, and were frozen in place earlier this week, police told the station.

“There’s no little ‘S’ on them, but you can definitely smell, it’s a distinct Skittles smell,” Dodge County Sheriff Dale Schmidt told CNN affiliate WISN.

Cops soon learned farmers use the Skittles and other sweets to fatten up cows because they’re “cheap carbs,” CNN reported.

“(It) is a very good way for producers to reduce feed cost, and to provide less expensive food for consumers,” Ki Fanning, a livestock nutritionist with Great Plains Livestock Consulting, told CNNMoney at the time.

The sugar-stuffed bovines are linked to a plunge in corn prices around 2012, which made corn syrup-based candies a cheap source of calories, a former farmer told the CNN affiliate WBAY at the time.

But some people called the cows’ candy diet a bunch of bull.

“Absolutely gross!” one commenter wrote on the Dodge County sheriff’s Facebook page, which posted detailed info about the practice.

“Why are we ok with feeding cows Skittles to fatten them up? Know where your meat comes from people. I hope you’re all learned something from this,” the commenter wrote.

Another commenter quipped that candy-tinted moo juice can’t be all bad.

“Strawberry skittles = Strawberry milk,” he wrote.

John Waller, an animal science professor at the University of Tennessee, said Skittles are a legit meal to feed the animals.

“Think it’s a viable (diet),” Waller told Live Science. “It keeps fat material from going out in the landfill, and it’s a good way to get nutrients in these cattle. The alternative would be to put (the candy) in a landfill somewhere.”

It wasn’t immediately clear why all of the Skittles were red.