An unpleasant odor that suddenly appeared in the refrigerator, can ruin the taste of even the freshest food. Often the cause is spilled milk, a forgotten piece of meat, or simply old dampness in which bacteria multiply. Many housewives rush to buy expensive odor absorbers, not suspecting that an effective product is already on the kitchen shelf.
Citric acid is a powerful natural antiseptic and deodorant that not only masks, but also eliminates the source of the problem. Unlike aggressive household chemicals, it is safe for food containers and does not require thorough rinsing if it remains in microscopic quantities.
In this article we will look in detail at how to properly prepare the solution, what proportions to follow for different types of contaminants and why this method is considered one of the most effective for plastic and enamel cameras. You will learn how to revive equipment after defrosting or a long period of inactivity.
Why citric acid is more effective than vinegar and soda
When the question of cleaning arises, many people remember soda or vinegar. However crystalline acid has the unique ability to dissolve fatty deposits, which are often the main cause of musty odors. Fat absorbs the aromas of foods, and plain water does not absorb it.
An acidic environment is destructive to most types of bacteria and mold. Upon contact with the surface, a chemical reaction occurs that destroys the cell walls of microorganisms. This is especially important if the smell appears after defrosting or a power outage.
Unlike vinegar, which leaves a sharp and persistent odor that requires a long time to air out, citric acid smells neutral or light citrus. It does not irritate the nasal mucosa when applied and does not require the use of a respirator.
⚠️ Attention: Citric acid in high concentrations can damage rubber seals. If your model has microcracks on the rubber bands, use a less concentrated solution. Another advantage is the absence of streaks. After drying, there are no whitish spots left on glossy glass or plastic shelves, which soda often leaves. This makes final processing much easier and faster. Indesit or LG the rubber bands have microcracks, use a less concentrated solution.
Another advantage is the absence of divorces. After drying, there are no whitish spots left on glossy glass or plastic shelves, which soda often leaves. This makes final processing much easier and faster.
The cost of processing with this product is minimal. One bag weighing 50-80 grams costs mere pennies, and it is enough for several general cleanings of all refrigeration equipment, including the freezer.
Preparing the refrigerator for cleaning
Before you start preparing the solution, you need to properly prepare the unit. The effectiveness of any cleaning depends on how well you remove visible dirt before applying the product.
First, completely empty the chambers of products. If it's cold outside, you can take perishable foods out to the balcony after pre-packing them. Be sure to unplug the device so that the compressor rests and you work safely.
☑️ Preparing for washing
Remove all removable elements: shelves, drawers, egg trays and bottle stands. It is better to wash them separately in a bathtub or large basin. If there are old pieces of food inside, carefully remove them with a plastic scraper or spatula so as not to scratch the plastic.
For models with the system No Frost it is important to get to the back wall, if the design allows. Condensation often accumulates there, which when mixed with dust gives an unpleasant smell of dampness. Wipe accessible areas with a dry cloth.
If the refrigerator has not been washed for a long time, a sticky coating may have formed on the walls. It should be removed as much as possible with warm water and regular dishwashing detergent. Citric acid will work as a final disinfectant and deodorizing agent.
Preparation of the solution: proportions and recipes
The main secret of success lies in the correct concentration. A solution that is too weak will not cope with bacteria, and a solution that is too strong may require repeated rinsing. We will look at three basic recipes for different situations.
For standard prevention and elimination of light odors, a classic recipe is used. Dissolve 1 tablespoon of powder in 1 liter of warm water. Warm water helps the crystals dissolve faster and more completely.
How to enhance the effect of the solution?
To enhance the effect, you can add a few drops of lemon or tea tree essential oil to the solution. The oils have additional antibacterial properties and will add a fresh aroma. However, do not overdo it, otherwise the smell of oil will dominate the food.
If the smell is persistent, for example, after spilled milk or meat, the concentration needs to be increased. In this case, take 2 tablespoons of powder per 1 liter of water. This composition copes better with organic residues.
To wash removable plastic boxes that have strongly absorbed odors, you can make a paste. Mix the powder with a small amount of water until it becomes thick sour cream. This mass is applied to problem areas, left for 15 minutes, and then washed off.
It is important to use only food-grade citric acid. Industrial acid may contain impurities that are hazardous to health. Always check the packaging before use, especially if you store supplies in transparent jars.
Step-by-step instructions: how to wash a refrigerator
The washing process should be systematic. You should always start from the top shelf and work your way down to avoid dirty water dripping onto areas that have already been washed. This is a basic cleaning rule that saves time.
Take a soft sponge or microfiber. Moisten it generously in the prepared solution and thoroughly wipe the inner walls of the chamber. Pay special attention to the corners and joints of the panels, where plaque most often accumulates.
⚠️ Attention: Do not use hard brushes or abrasive sponges. They will leave micro-scratches on the plastic, into which dirt will subsequently become clogged, and it will be impossible to wash it off.
Wipe the door on both sides. The inside of the door often suffers from splashes and condensation. Don't forget about the grooves at the bottom of the door, where water accumulates - this is a breeding ground for bacteria.
After treating all surfaces with the solution, let it “work” for 10-15 minutes. There is no need to wash off the product immediately. During this time, the acid will destroy bacteria and break down the fatty film.
Then wipe all surfaces with a clean, damp cloth soaked in plain water. If a concentrated solution or slurry was used, the rinsing procedure can be repeated twice. Leave the doors open until completely dry.
Wash the rubber seal separately. You need to carefully pull it back and wipe the folds with a cotton swab dipped in the solution. It is in the folds of the seal that black mold most often settles.
Features of cleaning different surfaces
Modern refrigerators are equipped with various types of coatings. Plastic, glass, metal and antibacterial coatings require an individual approach, even when using mild products.
Plastic shelves and drawers are the most susceptible to absorbing odors. Their porous structure traps aroma molecules. Soaking in a basin with an acid solution for 30-40 minutes is ideal for them.
Glass shelves can be washed more safely. Citric acid perfectly removes limescale and greasy marks from them, restoring transparency. The main thing is not to put hot glass under cold water so that it does not burst.
| Surface type | Concentration | Exposure time | Features |
|---|---|---|---|
| Plastic (boxes) | 2 tbsp. l. for 1 l | 15-20 min | Soaking is effective |
| Glass (shelves) | 1 tbsp. l. per 1 l | 5-10 min | Requires polishing |
| Metal (walls) | 0.5 tbsp. l. per 1 l | No more than 5 minutes | Risk of corrosion during long-term contact |
| Rubber (seal) | 1 tsp. per 1 l | No soaking | Wipe only |
Metal elements, if there are any inside the chamber (for example, guides for shelves), must be wiped quickly and thoroughly wiped dry. An acid is still an acid, and prolonged contact with metal is undesirable. If you have a coated model, use the minimum concentration. Aggressive substances can damage the special factory coating, and it will stop working.
If you have a coated model Antibacterial or Easy Clean, use the minimum concentration. Aggressive substances can damage the special factory coating and it will stop working.
Elimination of persistent odors and prevention
It happens that even after thorough washing, a slight odor remains. This means that the odor molecules have penetrated deep into the structure of the plastic. In this case, additional processing will be required.
Leave an open container with dry citric acid powder or cotton pads, generously moistened with a concentrated solution, in the chamber overnight. Close the door and leave the refrigerator turned off.
To prevent the appearance of unpleasant odors, you can wipe the shelves with a weak solution once a month. Also keep an eye on the expiration dates of food in the door - this is where seasonings and sauces most often spoil.
Regularly check the drainage hole (if your model has one). It is located on the back wall at the bottom. If it is clogged, the water sits and begins to go out, emitting a terrible smell. You can clean it with a cotton swab and a syringe with an acid solution.
⚠️ Attention: If the smell appears suddenly and resembles the smell of burning or burnt plastic, citric acid will not help. This may indicate faulty wiring or overheating of the compressor. Contact the service immediately.
Storing food in closed containers will be a good habit. This will not only prevent the mixing of odors, but also protect the products from drying out and bacteria floating in the air of the chamber.
Questions and answers
Is it possible to use citric acid to clean the freezer?
Yes, you can. However, in the freezer it is important to dry all surfaces very thoroughly after washing so that any remaining moisture does not turn into an ice crust. The solution should be warm so as not to shock the plastic with cold.
Is the acid safe for food if I do not completely rinse the solution?
Citric acid (E330) is a food additive and is used in preservation. The minimal traces that may remain are absolutely safe for humans. However, it is better to wipe the surfaces with clean water for taste comfort.
How often should you wash the refrigerator in this way?
It is recommended to carry out general cleaning with dismantling the shelves and using solutions once every 3-4 months. Preventive wiping can be done once a month when changing products or when stains appear.
Will this method help if a mouse or rat died in the refrigerator?
Citric acid will help disinfect surfaces, but will not completely remove the smell if it is absorbed into the insulation of the case. If the carcass gets inside the body (between the walls), it will most likely require disassembly by a specialist or replacement of the insulation.
How can you replace citric acid if you don’t have it at home?
If there is no acid, you can use fresh lemon juice (less effective due to the low concentration), vinegar (requires a long time to weather) or special sprays for refrigerators. Soda is good for abrasive cleaning, but does not cope well with grease.