Nestle SA was sued over claims that its Fancy Feast cat food contains fish from a Thai supplier that uses slave labor. The complaint against the Swiss food giant follows one last week accusing Costco Wholesale Corp. of selling farmed shrimp from Thailand, where slave labor and human trafficking in the fishing industry are allegedly widespread. The four consumers who filed the Nestle case in Los Angeles federal court seek to represent all California buyers of Fancy Feast who wouldn’t have bought the product had they known that the fish was allegedly harvested using forced labor…Nestle said in an e-mailed statement that forced labor “has no place in our supply chain.”