Marketers who employ sales promotion as a key component in their promotional strategy should be aware of how the climate for these types of promotions is changing. For instance, the onslaught of sales promotion activity over the last several decades has eroded the value of the short-term requirement to act on sales promotions. Many customers are conditioned to expect a promotion at the time of purchase otherwise they may withhold or even alter their purchase if a promotion is not present. For instance, food shoppers are inundated on a weekly basis with such a wide variety of sales promotions that their loyalty to certain products has been replaced by their loyalty to current value items (i.e., products with a sales promotion). For marketers the challenge is to balance the advantages short-term promotions offer versus the potential to erode loyalty to the product.