Unless you’re buying for a big family or large group of people, buying these products in bulk isn’t necessarily going to save you money in the long run.
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What not to buy: Cooking oils
Cooking oils also have an expiration date. In fact, olive and vegetable oils only keep for three to five months in the pantry after they’ve been opened, according to the USDA.
If you don’t have an industrial-size fryer in your home, it’s better to buy smaller bottles of oil at the supermarket and waste less.
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What not to buy: Books
Books are usually the same price or cheaper on Amazon. While it can be a pain to wait for delivery, your wallet will thank you.
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What not to buy: Canned goods
Sure, they last a while, but canned goods can actually cost less at supermarkets than at Sam’s Club. Many chains offer weekly can-specific deals.
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What not to buy: Liquid bleach and detergent
Over time, liquid bleach and detergents can break down. In an interview with Huffington Post, Dr. Mark A. Benvenuto, professor and department chair of chemistry and biochemistry at University of Detroit Mercy, explained that bleach begins to degrade after six months. Although it becomes less effective, it does not become more toxic.
Similarly, laundry detergents break down once they’ve been open for six months, making value packs an ill-advised investment.