There’s a reason why so many people love shopping for groceries at Aldi. Aldi is known for its affordable prices. And if you start shopping at Aldi instead of your usual supermarket, you may find it much easier to stick to a budget.

But while it’s more than possible to save money by shopping at Aldi, if you’re not careful, you could end up wasting money. This is how.

1. Buy food that you end up throwing away

The reason Aldi is able to keep its prices so low is that it stocks its shelves with lesser-known brands. But if those brands don’t perform well, it could lead to wasted food and wasted funds.

If you have picky eaters at home, they may reject Aldi products you buy simply because they don’t recognize the boxes they come in. And even if you don’t have a family of picky eaters, you can try items that just aren’t enough for you.

For example, you might take a chance on a brand of peanut butter you’ve never tried before because it’s $1 cheaper than your preferred brand. But if there’s something off about the taste, are you really going to subject yourself to 27 sandwiches of peanut butter that’s not particularly good? Probably not.

But if you throw away the jar, which is understandable in this situation, then suddenly you’re not saving a dollar on peanut butter. Rather, you wasted all the money that jar cost.

One problem with shopping at Aldi is that inventory can be inconsistent. This could lead to more expensive purchases on your part.

Let’s say you decide to make chicken and broccoli for dinner, only Aldi doesn’t have broccoli in stock on the day of your purchase. If you replace broccoli with mushrooms, which are commonly more expensive, you are spending extra money because you couldn’t find the item you originally needed.

This is less likely to happen in a typical supermarket with more traditional inventory and more regularly stocked shelves.

3. Buy impulse items from Aldi’s Hall of Shame

Another reason so many people like Aldi is that the store’s Aldi Finds aisle is packed with seasonal products that you might not find anywhere else. And the prices tend to be great.

But there’s a reason Aldi fans call that section the Aisle of Shame. Consulting it could lead you to make impulse purchases. And while the items you buy may bring you joy, they are a waste of money if they are things you don’t need.

That said, here’s a trick to avoid the Hall of Shame. If you have an Aldi nearby and you only need a few items from the store, walk and take your purchases home. If you don’t have the physical capacity to take home your impulse purchases, you won’t be able to make them.

Shopping at Aldi has the potential to save you a lot of money, especially if you swipe the right credit card at checkout. Click here for a list of the best credit cards for grocery purchases..

But also be aware of the fact that if you’re not careful, you could end up wasting a lot more money than expected over the course of your Aldi shopping.