Suddenly discovered yellow plaque on the walls of the refrigerator can be an unpleasant surprise for any home cook. Most often, this is the result of the settling of fatty vapors during cooking, which oxidize over time and change the color of the plastic. Also, the cause may be contact with certain products or even aging of the material from which the internal shelves are made.
This problem should not be ignored, since the porous structure of contaminants becomes an ideal environment for the growth of bacteria. In addition, old plaque often emits an unpleasant odor, which is immediately absorbed by stored products. Properly selected cleaning agents will help return the equipment to its original appearance without damaging the surface.
Before starting active actions, it is necessary to understand the nature of the contamination so as not to aggravate the situation. Some aggressive methods can permanently ruin white plastic, making it dull or rough. In this article, we will look at safe and effective ways to combat yellowness, which can be implemented using available homemade ingredients.
Causes of yellow spots and plaque
Understanding the source of the problem is half the success in the fight for cleanliness. Yellowness rarely appears just like that; it is usually preceded by specific everyday situations. The main enemy of white plastic is kitchen grease, which rises in the form of a tiny suspension during frying and settles on all surfaces, including the inside of the refrigerator.
Over time, the fat film polymerizes under the influence of temperature changes and becomes sticky. Dust, food particles and microorganisms stick to this sticky base. If you do not regularly wipe the shelves, a dense layer will form that cannot be washed off with ordinary soapy water. This process occurs especially quickly on doors and upper shelves.
Another common reason is contact with certain types of products. For example, storing open containers with turmeric, saffron or carrot juice can lead to local staining of the plastic. ABS plasticused in many modern models, tends to absorb coloring pigments if they are not removed in time.
⚠️ Attention: If yellowness appears sharply and has a reddish tint, looks like rust, check the seals and metal parts. Sometimes moisture gets into microcracks in the coating of shelves, causing corrosion of the metal inside, which comes out.It is also worth taking into account the natural aging process of materials. Cheap types of plastic can change their chemical composition under the influence of ultraviolet radiation (if the refrigerator is located near a window) or simply over time. In this case, surface cleaning may not produce results, since the structure of the material itself has changed.
Preparing the refrigerator for general cleaning
Before you begin applying cleaning solutions, you must properly prepare the unit. Chaotic spraying of products across full shelves will not give the desired effect and can lead to food spoilage. The first step should always be to completely empty the interior space.
Take out all the products, remove all removable elements: shelves, vegetable drawers, bottle holders and egg trays. It is best to wash them separately in a bathtub or sink where you have access to plenty of water. The refrigerator itself must be defrosted during washing, if it does not have a system
No Frostso that water does not interfere with cleaning the lower part.For effective work, prepare the following equipment:
- 🧽 Several soft sponges (one for washing, the other for rinsing).
- 🧴 Spray bottle for uniform application of solutions.
- 🧻 Paper towels or lint-free microfiber cloths.
- 🪣 Container with warm water.
- 🧤 Rubber gloves to protect the skin hands.
It is important to disconnect the device from the power supply before starting work. This is a safety requirement and an opportunity to inspect the back wall, where dirt often flows. While the refrigerator is cooling, you can do preliminary dry cleaning - sweep away crumbs and visible dirt with a dry cloth.
☑️ Preparing for washing
Done: 0 / 4Folk methods: soda, vinegar and ammonia
Home remedies often cope with yellowness no worse than expensive household chemicals, while remaining safe for storing food. One of the most effective mild abrasives is regular baking soda. It perfectly breaks down fatty deposits and neutralizes unpleasant odors.
To prepare a cleaning paste, mix soda with a small amount of water until the consistency of thick sour cream. Apply the mixture to the yellow areas and leave for 15-20 minutes. After this, gently rub with a sponge. Abrasive particles soda does not scratch the plastic, but removes plaque well. To enhance the effect, you can add a little lemon juice.
Table vinegar is another powerful ally in the fight for cleanliness. An acidic environment perfectly dissolves mineral deposits and fat.
- 🍋 Mix vinegar and water in a 1:1 ratio.
- 💦 Spray contaminated surfaces generously.
- ⏳ Leave for 10 minutes for reaction.
- 🚿 Rinse thoroughly with warm water.
If the yellowness is persistent and is caused by aging plastic or ingrained nicotine (if the refrigerator is in the smoker’s kitchen), ammonia will help. Dissolve one tablespoon of ammonia in a liter of water. This solution has a whitening effect. However, you need to work with it carefully and only in a well-ventilated area because of the pungent odor.
Using hydrogen peroxide for bleaching
When gentle methods do not help, help hydrogen peroxide arrives. This substance is a strong oxidizing agent and can destroy organic compounds that cause discoloration of plastic. For household purposes, it is better to use a 3% solution, which is sold in any pharmacy.
There are two main methods of use. The first is wiping. Soak a cotton pad or soft cloth in peroxide and scrub the yellow areas thoroughly. Leave the product on the surface for 10-15 minutes, but do not let it dry completely. Then rinse off with clean water. This method is good for local spots.
The second method is more radical and is suitable for strong yellowness over the entire area of the chamber. You will need a sponge that needs to be soaked generously with peroxide. Wipe the walls in a circular motion. You can leave the foam on the walls for a longer time (up to 30 minutes) if the plastic does not react painfully. Hydrogen peroxide is most effective against yellowness caused by the oxidation of fats and exposure to light.
In some cases, a mixture of peroxide and soda is used. The paste is applied to problem areas and kept in direct sunlight (if it is possible to place the shelves on the balcony) or simply in a warm room. Ultraviolet light activates the bleaching reaction.
Specialized household chemicals
If you do not trust traditional methods or the contamination is too complex, you should turn to professional products. The modern market offers a wide range of cleaners designed specifically for kitchen appliances. They contain surfactants that emulsify fat, making it easy to remove with water.
When choosing a product, pay attention to the labeling “for plastic” or “for refrigerators.” Harsh solvents, high concentrations of chlorine or acetone can melt the top layer of plastic, leaving it sticky or matte forever. Avoid products with large abrasive particles that will leave micro-scratches.
Popular product formats:
Type of product Approximate action Application features Spray cleaner Quick removal of grease Requires thorough rinsing Washing gel Delicate cleaning Good foams, economical Wet wipes Express care Not suitable for old yellowness Paste polish Removing scratches and stains Contains microabrasives When using chemicals, be sure to follow the instructions on the package. Manufacturers often recommend wearing gloves and opening windows. After treating with any chemical composition, the refrigerator must be rinsed with clean water 2-3 times to prevent chemical residues from getting on the food.
📊 How do you prefer to wash the refrigerator?Folk remedies (soda, vinegar)Household chemicals from the storeSteam cleanerMagic sponges (melamine)Removing complex dirt and rust
Sometimes yellowness is not just dirt, but a consequence of more serious processes. If red streaks resembling rust appear on the plastic, check the condition of the metal elements inside the camera. Rust from shelves or fixtures may have transferred to the plastic. In this case, you need to strip the metal part to the base and coat it with a protective compound.
To remove stubborn rust from the plastic itself (if it is not through), you can use special acid-based rust removers, but you need to act in a targeted manner. Apply the product with a cotton swab strictly to the stain, avoiding contact with clean plastic around it.
Another difficulty is traces of tape or stickers, which turn yellow and harden over time.
- 🌡️ Heat the stain with a hairdryer to soften the glue.
- 🍊 Use vegetable oil or a special “Antiscotch” product.
- 🧽 Carefully clean off the residue with a plastic spatula or an old credit card.
A melamine sponge is an “eraser” for difficult stains. It works like a fine abrasive. Simply wet the sponge with water and scrub the stain. It copes well with black stripes from soles (if someone climbed into the refrigerator) and persistent yellowness. However, remember that melamine wears off on its own, being consumed during the cleaning process.
⚠️ Attention: Never use metal brushes, scrapers or knives to scrub away stains inside the refrigerator. You will irreversibly damage the smooth surface of the plastic, and new dirt will clog into the grooves, which will no longer be removed.Prevention and care of internal surfaces
So that the question “how to clean the inside of the refrigerator from yellowness” does not arise too often, it is important maintain regular care. It is recommended to carry out general cleaning with defrosting once every 3-6 months, depending on the model and workload. Every week, it is enough to wipe the shelves with a damp cloth.
Store food correctly. Keep liquid and coloring products in closed containers. If milk or juice spills, wipe it up immediately, without waiting for the liquid to dry and turn into a sticky residue. The use of containers and organizers not only structures the space, but also protects the shelves from direct contact with dirt.
To maintain freshness, you can use natural odor absorbers, such as activated carbon, soda in an open jar, or special flavor balls. They will help prevent the appearance of a musty smell that often accompanies old dirt.
Monitor the condition of the rubber seals. If they are dirty, the dirt from them is transferred to the body and inner walls when the door is opened. Wash them at the same time as the main chamber, using a mild soap solution.
Frequently asked questions (FAQ)
Is it possible to use chlorine-containing products (Whiteness) to bleach yellowness?
You can use chlorine, but with great caution. Concentrated chlorine can make plastic brittle and change its structure, making the surface rough. If you decide to use it, be sure to dilute the product strongly with water (1 cap per 5 liters) and rinse thoroughly.
Why does the refrigerator turn yellow, even if it is washed often?
This may be due to the quality of the plastic. Cheap plastics are prone to photo-oxidation under the influence of light or simply aging of the polymer chains. Also, the cause may be high humidity combined with poor ventilation in the kitchen.
Is it safe to wash the inner shelves in the dishwasher?
Glass shelves - yes, if they do not have plastic frames. It is not recommended to wash plastic drawers and shelves in the dishwasher: high temperatures (usually above 60°C) can deform the plastic, after which it will become cloudy and even more susceptible to contamination.
How to remove the smell after cleaning with vinegar or chemicals?
The best way is ventilation. Leave the refrigerator doors open for several hours. You can also place lemon slices, coffee beans or cotton pads soaked in vanilla extract inside.