According to the FTC's Retail Food Store Rule, grocers must offer rain checks or product substitutes of comparable value when they run out of advertised items. They also can comply by ordering quantities of the item sufficient to meet reasonably anticipated demand or by disclosing in ads that items are available only in limited quantities or only at some stores. Although the specific terms of the Rule apply only to retail food stores, other companies advertising products available in limited quantity or only at some stores may want to make similar disclosures to reduce the risk of deception.