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Costco is the place to go for anyone who wants to stock up on bulk items, prepare for a party or big event, and save money while doing so.

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The buying in bulk mentality, however, can often lead people to purchase items that ultimately aren’t worth it; either because you can’t possibly use all of what you’ve purchased, or it can be cheaper somewhere else.

Here we take a look at nine of Costco’s Kirkland Signature brand products that you might want to rethink purchasing, because they may not be worth your hard-earned dollars.

Spices

Anyone who cooks a lot will know the allure of a big, beautiful tub of your favorite spices, even just simple pepper or Kirkland’s organic no-salt seasoning. But if you notice that most spices come in tiny little jars, that’s not just to gouge you on price — it’s because spices don’t last forever.

According to the spice company, McCormick, dried spices in jars last, on average between 1 and 4 years. So if you buy yourself a huge container of spices, no matter how good the deal is now, chances are you’ll never use up the whole thing and will wind up losing money in the long run.

Almond Flour

Gluten-free baking is all the rage these days, as people become more aware of food sensitivities or just like to try new things. Thus, it would seem like Kirkland’s three-pound bag of gluten-free almond flour would be a steal.

The problem is, almond flour lasts only a few months past its sell-by date, according to Does it Go Bad, and up to a year in the freezer at most. Are you really going to bake that many items with almond flour? Probably not.

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Tequila

Costco makes it super easy to prepare for a party, particularly when it comes to beer, wine and spirits. Who wouldn’t want to take home a nice big bottle of Kirkland’s Tequila Añejo to live it up?

According to MoneyTalksNews, however, the spirits that make margaritas so tasty apparently taste pretty subpar at Costco. One reviewer said the tequila has, “an unnatural sweetness like it does not come straight from an agave field or distillation,” and another went even farther, saying, “It’s like wearing clown shoes or something. It’s out of place.” So save yourself the money and dissatisfaction by skipping this one.

Diapers

Of all the things to buy in bulk, diapers have got to be at the top of the list. Babies go through diapers faster than they grow, and that’s saying something. Naturally, it makes sense to buy your diapers in bulk, which surely translates to a good deal.