Don’t Buy- Condiments
You should know that mustard, ketchup, mayonnaise, and other similar condiments do not really have shelf lives. Basically, they stay tasty and fresh for a long time. As soon as you open them, however, you have to keep them in the fridge. On top of that, you will need a lot of fridge space to store the big jars.
Don’t Buy- Salsa
If you are looking to buy a party size jar of salsa, Costco has got you covered. The huge amount is good if you are hosting a get-together, but the smaller jar is better if you plan to use it occasionally. After all, the huge version might spoil before you are even halfway done.