Didi Seven is a stain remover that has been heavily advertised in North America. [1] For many years, it was manufactured and marketed by Interwood, a Canadian company which acquired rights to the product from a German company. [2]
It became well known for its infomercial television marketing campaigns, such as a commercial in which a red sock is turned to white. [3]
In 2004, Consumer Reports tested Didi Seven Ultra and found that it performed well in pretreating greasy stains and tannin/sugar stains before washing clothes in the laundry. [1] However, the product failed to completely remove lipstick and ink stains. [1]