Bovaer is an organic compound that works by suppressing the enzyme in the cow's rumen that forms methane. Arla Foods, which owns the UK's biggest dairy co-operative, announced last week that it will begin using Bovaer and is working with grocery chain stores Aldi, Morrisons and Tesco. There has been customer backlash against Arla products and the grocery stores as people reject manipulated foods. 

Arla said Bovaer "does not filter through to humans when they consumer dairy products". Bovaer was authorised in the UK in December 2023, according to DSM, and is available for sale in 68 countries. However, many people are still skeptical that Bovaer is safe for the animals that consume it and humans who eat animal products.

In the United States, Bovaer has teamed up with Elanco and farmers can receive carbon credits for using the product to add to their revenue. In addition to the carbon marketplace, the US Department of Agriculture has awarded $89 million in funding to support farms using technologies like Bovaer to reduce their methane emissions. It has not been announced whether farmers in the US are utilizing the product that was approved for use.

Arla Foods, which owns the UK's biggest dairy co-operative, announced on 26 November it was going to start using the supplement.