15 Things Never To Buy At Costco And Sam’s Club

8. Laundry Detergent

If you have a big family, laundry detergent in bulk seems like a steal. However, these products lose their effectiveness after six months in opened bottles and after nine months in unopened bottles. Can you really use up six or more huge bottles in that short of a timeframe? We think it’s better to buy a bottle as you need it. Or, for a healthier and eco-friendly option, consider using soap nuts for your laundry instead.