[K03NT3S31N]

I was thinking what to do when you wanna SE some product (like arizona, lays etc.)

As per your examples above, since these are companies that usually sell consumables, the disposel of a faulty item is good method to choose.
Tell the company, around 30min after consumption you felt sick and maybe even puked. You could also tell them that the Arizona Ice Tea smelled bad etc.

For consumable products, always address the health aspect as many companies, especially in the food sector, must take this very seriously.