Yellow plaque on the walls of the refrigerator and a persistent unpleasant odor are a problem that every second home cook faces. Even with regular cleaning, plastic fades over time, and microbes and food debris provoke an “aroma” that cannot be removed with ordinary water. The reasons for the appearance of yellowness lie in the oxidation of plastic, the effect of fats, coloring pigments from products (for example, carrots or turmeric), as well as the proliferation of bacteria on seals and shelves.
In this article we will examine 10 effective methods returning the refrigerator to its original whiteness and freshness - using improvised means (soda, vinegar, peroxide) to professional chemistry (Cillit Bang, Sanfor). We will pay special attention safe methods to refrigerators with the system No Frost and models with antibacterial coating (Samsung BioFresh, LG DoorCooling+). You will also learn how to prevent the reappearance of yellowness and odor using simple preventive measures.
Why the refrigerator turns yellow and smells: 5 main reasons
Before you start cleaning, it is important to understand the source of the problem. Yellowness and odor rarely occur on their own - usually the result of a combination of factors:
- 🧪 Plastic oxidation. Cheap models of refrigerators (for example Indesit or Biryusa budget lines) are made of ABS plastic, which turns yellow over time when exposed to light and temperature changes. Contact with fatty foods (butter, fish, sausage) accelerates the process.
- 🦠 Bacteria and mold. Microorganisms accumulate in the sealing gum and on the back wall, which not only emit an odor, but also leave dark or yellowish stains. It is especially dangerous if the refrigerator has not been defrosted for a long time.
- 🥕 Coloring products. When carrot juice, tomatoes, spices (turmeric, paprika) come into contact with plastic, they are absorbed into microcracks and leave permanent stains. They cannot be washed with water - abrasive or bleaching agents are needed.
- 🔥 High temperature. If the refrigerator is located next to a stove or radiator, the plastic heats up and loses color faster. The same thing happens when you open the door frequently in the heat.
- 🧼 Improper cleaning. The use of aggressive detergents (for example, Domestos or Whiteness) destroys the top layer of plastic, making it porous and susceptible to contamination.
Interestingly, in In premium refrigerators (for example Liebherr or Bosch Serie 8) yellowness appears less frequently due to the use of UV-resistant plastic and antibacterial additives. However, even they require proper care.
⚠️ Attention: If yellowness appears suddenly and is accompanied by a strong chemical smell, this may be a sign of a freon leak. In this case, immediately unplug the refrigerator and call a technician. Self-cleaning will not help here!
Preparing the refrigerator for cleaning: 5 mandatory steps
To clean the refrigerator effectively and safely, it must be properly prepared. Neglecting this step can lead to equipment breakdown or uneven cleaning.
Unplug the refrigerator and remove all products
Take out removable shelves, drawers and grates - they are washed separately
Install a tray to collect melt water (if necessary defrosting)
Prepare protective equipment: gloves, a mask (when working with vinegar or ammonia)
Check the temperature in the room - it should not be lower than +18°C, otherwise the plastic may crack -->
If the refrigerator has a system No Frost, do not defrost it necessary - just unplug it for 1-2 hours for the condensation to evaporate. For models with a drip system (Atlant, Stinol), defrosting is required: leave the door open for 3–4 hours, after placing rags on the shelves to absorb water.
Soak removable elements (shelves, containers) in warm water with soda (2 tbsp. per 5 l) for 15–20 minutes. This will soften the grease and make further cleaning easier. Wipe the rubber seal with a damp sponge and soap - it accumulates the most dirt and bacteria.
Once a month
Once every 3 months
Only when the smell appears
Never washed-->
Top 5 folk remedies for removing yellowness and odor
Home remedies are no less effective than professional chemicals, but are safe for health and do not damage plastic. The main thing is to use them correctly.
| Remedy | How to use | Pros | Cons |
|---|---|---|---|
| Baking soda | Dilute 3 tbsp. l. soda in 1 liter of warm water. Apply the paste to the yellow stains, leave for 15 minutes, then wipe with a sponge. | Safe for all surfaces, kills odor, whitens. | Weak effect on old yellowness. |
| Vinegar 9% | Mix vinegar with water 1:1. Spray on the surface, wipe after 10 minutes. For the smell, leave for 30 minutes. | Kills 99% of bacteria, removes fat, brightens plastic. | Pungent odor, can damage rubber seals with frequent use. |
| Hydrogen peroxide 3% | Apply undiluted peroxide on a cotton pad, wipe the stains. For scent, spray from a spray bottle. | Whites, disinfects, does not leave streaks. | Not suitable for black plastic parts (may discolor). |
| Lemon juice | Squeeze the juice 1 lemon, mix with 200 ml of water. Wipe the walls, leave for 20 minutes. | Pleasant smell, natural bleach, kills mold. | Weak effect on strong yellowness, expensive for large volumes. |
| Toothpaste | Apply white paste (without granules) on stains, rub with a soft brush, rinse. | Suitable for small stains, the abrasive gently polishes the plastic. | Requires physical effort, ineffective over large areas. |
Hydrogen peroxide is the only product on the list that simultaneously whitens plastic, kills mold and neutralizes the smell of ammonia (characteristic of spoiled seafood). However, it cannot be used for cleaning refrigerators with ionic silver (for example, Panasonic NR-BN), since it neutralizes the antibacterial coating.
⚠️ Attention: Never mix vinegar and baking soda in the same container - the reaction releases carbon dioxide, which can damage the plastic parts of the refrigerator. Use them separately with an interval of 30 minutes.
Professional chemistry: what to choose for complex contaminants
If folk remedies fail, it’s time to move on to the “heavy artillery”. Modern detergents for refrigerators not only remove yellowness, but also form a protective film that slows down re-contamination.
- 🧴 Cillit Bang “Clean refrigerator”. Spray with active oxygen removes yellowness, mold and odors in 5 minutes. Suitable for No Frost, but requires ventilation after use.
- 🧴 Sanfor "Antibacterial". Gel based on chlorhexidine disinfects and whitens. Safe for rubber seals.
- 🧴 Topperr 3031. Professional product for cleaning companies. It even removes old yellowness, but has a pungent odor.
- 🧴 Sano Refrigerator Cleaner. Eco-friendly spray without chlorine, suitable for refrigerators with bio-filters (Samsung Twin Cooling Plus).
When choosing a product, pay attention to the composition:
- Chlorine-containing (for example, Whiteness) bleach quickly, but destroy plastic and leave toxic fumes.
- Acidic (acetic, citric acid) are effective against fat, but can damage metal parts.
- Alkaline (soda, Sanfor) are safe, but effective slower.
For refrigerators with water dispenser (LG InstaView, Whirlpool) use only products marked “for food surfaces”. The entry of aggressive chemicals into the water supply system can damage the filter.
How to wash the rubber seal: step-by-step instructions
The seal is the dirtiest place in the refrigerator. Crumbs, grease and bacteria accumulate here, causing an unpleasant odor. It must be cleaned separately from the main surfaces.
- Remove the elastic band (if this is possible in your model). In most refrigerators (Atlant, Beko) it is secured with latches or screws. If you can’t remove it, carefully bend it back.
- Soak in a solution: 1 liter of warm water + 2 tbsp. l. soda + 1 tbsp. l. vinegar. Leave for 30 minutes.
- Clean with a brush (for example, an old toothpaste) with a drop of dishwashing detergent. Pay attention to the folds.
- Rinse and dry. The rubber must be wiped dry, otherwise it will become moldy.
- Apply silicone grease (sold in auto stores) - this will prevent cracking and extend service life.
If the seal is deformed or cracked, it is better to replace it. For popular models (Samsung RB, Indesit C), elastic bands are sold at service centers or at AliExpress. The average price is 800–1500 rubles.
⚠️ Attention: Do not use abrasive sponges or knives to clean the seal - this breaks the seal and leads to icing of the walls. If after cleaning the door does not close well, check the magnetic tape with a tester (resistance should be 20–40 Ohms).
Cleaning the No Frost system: features and errors
Refrigerators with No Frost (Bosch KAN9, Electrolux ERN) do not require defrost, but this does not mean that they do not need to be washed. The ventilation holes and the evaporator in such models become clogged with dust and grease, which leads to yellowness and odor.
How to clean:
1. Turn off the refrigerator and remove all shelves.
2. Remove the back panel (if provided design) - the evaporator is hidden under it.
3. Vacuum the ventilation grilles with a soft nozzle.
4. Wipe the evaporator with a napkin soaked in a solution of vinegar (1:1 with water).
5. Clean the drainage hole with a cotton swab - it often gets clogged and becomes a source of odor.
Mistakes that spoil No Frost:
- Using sharp items for cleaning the ventilation (you can damage the fan blades).
- Flushing the evaporator with water under pressure (will lead to corrosion).
- Ignoring the drainage hole (stagnation of water causes mold).
How to check the operation of No Frost after cleaning?
Plug in the refrigerator and set the temperature in the freezer to -18°C. After 2 hours, check:
- The fan should make a uniform noise without squeaks.
- The back wall of the freezer should be slightly warm (which means the defrosting cycle is in progress).
- There should be no ice on the walls. If it appears, the cleaning was carried out incorrectly, or the defrosting heater is faulty.
Prevention of yellowness and odor: 7 rules of care
To keep the refrigerator clean longer, just follow simple recommendations:
- 📅 Wash the refrigerator every 2-3 monthseven if there is no visible dirt. Use mild products (soda, Ecover).
- 🥩 Store food in containers. Opened meat, fish or cheeses leave greasy stains and odor.
- 🧊 Defrost the freezer every six months (for No Frost —just wipe with a damp cloth).
- 🍋 Use natural odor absorbers: lemon slices, coffee beans or activated carbon in an open package.
- ☀️ Protect the refrigerator from the sun. Ultraviolet light accelerates the yellowing of plastic. If the kitchen is southern, use curtains.
- 🔌 Check the seal If it has lost its elasticity, replace it, otherwise condensation will form on the walls.
- 🧴 Apply a protective coating After cleaning, a car polish for plastic (Sonax) is suitable - it creates a film that repels dirt.
For models with freshness zones (LG Door-in-Door, Samsung FlexZone, use special wipes with silver ions - they prevent the growth of bacteria and the appearance of odors.
FAQ: Frequently asked questions about cleaning the refrigerator
Can I use bleach to clean the refrigerator?
Bleach (Whiteness, ACE) removes yellowness, but it can only be used for external refrigerator surfaces. It is dangerous for internal cleaning: chlorine penetrates into microcracks in the plastic and then mixes with products, and the vapors can cause poisoning. If you still decide to take a risk, after cleaning, ventilate the refrigerator for at least 12 hours.
Why did the smell become even stronger after cleaning with vinegar?
This happens if the vinegar was not completely washed off or it was used in a higher concentration 9%. To remove the vinegar smell:
- Wipe the walls with a soda solution (1 tablespoon per 1 liter of water).
- Rinse with clean water and dry.
- Place an open pack of soda in the refrigerator for 24 hours.
How wash the refrigerator with antibacterial coating (Samsung BioFresh, LG Hygiene Fresh+)?
For such models, you cannot use aggressive chemicals (vinegar, chlorine, abrasives) - it destroys the protective layer. Optimal means:
- Special sprays for refrigerators with silver ions (Sano Silver).
- Soap solution (for children soap or Frosch).
- Hydrogen peroxide 3% (only for removing stains, no more than once every 6 months).
After cleaning, apply a spray with nano-silver on the walls (sold in hardware stores) - this will restore antibacterial properties.
How to remove yellowness from the black plastic of a refrigerator?
Black plastic (for example, in models Gorenje NRK or Kuppersberg) cannot be cleaned with bleach, soda or peroxide - they will leave white stains. Use:
- Special products for black surfaces (Pledge for electronics).
- A solution of ammonia (1 tbsp per 1 liter of water) - it brightens without damaging the color.
- Soft furniture polishes (Mr. Proper).
After cleaning, wipe the surface with mineral oil (sold in pharmacies) - this will restore shine.
How much does it cost to professionally clean a refrigerator?
The cost of the service depends on the region and the degree of contamination:
- Basic cleaning (washing shelves, walls, seals) - 1000–1500 rubles.
- Deep cleaning (includes disassembly No Frost, treatment with a steam generator) - 2000–3500 rubles.
- Disinfection (using a UV lamp) - 500–800 rubles additional.
In Moscow and St. Petersburg, prices are 20–30% higher, specialists from companies "Clean House", "Cold Service" or private cleaners from YouDo.