In the bid for something new in the packaging market, Tetra Pak has signed a joint marketing agreement with research and development company BioGaia Biologics to add probiotic straws to ambient packaging in the US. The individually wrapped LifeTop Straws contain the lactic acid bacterium Lactobacillus Reuteri (Reuteri) and can be attached to the outside of beverage cartons. Reuteri is thought to help reduce the risk of stomach disorders, and the idea is that the straw will release the probiotics when the product is consumed.