Sure, something is satisfying about coming home from the grocery store and filling your fridge to the brim. It makes the meal choices seem almost endless, but filling it too full is actually a massive mistake. According to Hunker, over-filling your fridge isn’t just easy to do, but there are going to be several consequences that you might not notice, but your bank account will. Air circulation is a big part of what keeps everything in your fridge cool, and when there’s too much stuff in it, you’re blocking a lot of that circulation. That means the fridge needs to work harder to keep everything at the right temperature, especially if all that food blocks some air vents. In turn, that means a higher energy bill.

In addition to higher energy bills, you might also be looking at some extra food spoilage as an over-full fridge means it’s unlikely that everything’s going to be chilled to the correct temperature. When it’s not, that’s when you’re risking food spoilage or — worse — food poisoning.

What temperature is your fridge set at? You might want to check because there’s a good chance it’s wrong. Your refrigerator temperature should be set at 40 degrees Fahrenheit or below.  They say that you should also be checking your temps regularly to make sure everything’s working A-okay, but there may be more to it. Instead, try to keep your fridge a little colder — ideally, that’s between 35 and 38 degrees. That’ll keep everything above freezing (32 degrees Fahrenheit) and farther from the food spoilage, bacteria-building danger zone.