In canada the class action suit was open to anyone who could prove they bought the powder between such and such a dates. Tqlc and asbestos deposits are often near each other, or intertwined, so they committed the usual corporate crime of refusing to throw away product, just cuz it could harm the customer. Generally only heavy users were affected, sorta like that one guy that ate so much microwave popcorn he got popcorn lung from the fumes.