Think your refrigerator is just one big box of evenly cold air? Not so! The temperature inside the average fridge actually varies from front to back, bottom to top and everywhere in between. Because of this, food product placement within the appliance is far more important than you probably realize.
The whole purpose of the modern refrigerator is to slow the growth of bacteria, which thrive in temperatures from 4.4 to 60 degrees Celsius. As a result, refrigerators are typically set at or below that low end to protect foods against bacteria. Although it might seem like time spent organizing the fridge will spoil your day, doing so will actually make it more user-friendly, easier to clean and food safety-conscious.
Those little bins on the inside of refrigerator doors are convenient, but they don't maintain a consistent temperature, so definitely refrain from putting perishable foods in there. The top area is not as cold as the bottom of the fridge, so save it for the foods that don't need extra-chilly temperatures. Store foods that are ready to eat or already cooked on the top shelf. The middle shelf is the most temperature-controlled part of the fridge, so place eggs here. Drinks and prepared foods can also live on the middle shelf if you ran out of room up top. The back of the bottom shelf is the coldest spot in the fridge, so store perishable dairy products here to keep them edible longer. Never store foods with high water content here, because the water within them can and will freeze, effectively ruining them.