Mayonnaise
The jumbo-sized mayonnaise containers sold by the warehouse style store are not for the faint of heart. While it might seem like a good idea to purchase condiments that your family uses often in bulk, buying containers of mayonnaise that are several times larger than what you typically use can have negative impacts on both your health and your finances. The large size inspires consumers to use more than they need and if you don’t go through the whole container before it expires, you’ll have wasted some serious dough.