a business cannot sell goods or services that are unsafe or not as they are described either on the packaging or by a sales person
in legal terms, there products are "not fit for the purpose"
sometimes without realising a business may sell defective products
in this case, the business is forced to recall the products meaning the business asks all customers to return the products
if a business does not meet the law relating to faulty or defective goods, it has to make changes to it's marketing strategy in both long and short term
short term: the business has to recall the products increasing costs such as transportation
long term: products have to be redesigned and relaunched which incurs costs and reduced profits. not only that, additional promotion and advertising would be required to assure the customers that the product is safe for use