When it comes to U.S. consumers there are three things companies should never mess with–their pets, stomachs and kids. Thanks to poor oversight in factories in China, corporate America messed with all three in 2007 and paid a hefty price for doing so.

It started with pet food. To boost protein levels in pet food bound for U.S markets, Chinese factories added melamine, a chemical used to make fertilizer. That chemical was blamed for the deaths of hundreds of pets in March. Then reports surfaced that some foods imported from China were unfit for human consumption.