Woodlice in the bathroom

94 viewer
8 minutes. for reading

Many parasites live in houses and apartments, and wood lice are one of the most common. In this article we will look at the main aspects related to woodlice: who they are, why they prefer to live in damp places, what are the main reasons for their appearance, and what remedies are effective against these unwanted guests.

Many people mistakenly think of woodlice as insects, but in fact these small creatures belong to the class of crustaceans. Woodlice have many legs, allowing them to move quickly over various surfaces, and they are quite difficult to catch. In the wild, woodlice live on land, preferring moist conditions such as under fallen trees, among rocks and leaves, and often near water. They are active at night, searching for food in the dark, and hide from bright sunlight during the day.

Woodlouse. Appearance and nutrition

Woodlice have an oblong body covered with scales, usually gray or brownish in color, although white individuals with patterns on the back are sometimes found.

Their diet consists of fungi, small pieces of paper, bits of dirt and similar materials. Woodlice are known to be active at night, making them almost impossible to spot during the day. If threatened, the woodlouse curls up into a ball and freezes, pretending to be dead. Their average lifespan is about one year.

What is the danger of woodlice?

Woodlice, although unpleasant, are non-aggressive creatures. They do not bite or drink blood, unlike bedbugs or ticks. However, like these insects, wood lice also pose a certain danger. Running through the sewer, they “pick up” fungi, lichens and various bacteria, becoming their carriers. The microorganisms that these parasites bring into the home can pose a threat to both people and animals.

Why do woodlice appear in the apartment?

Woodlice usually appear in homes due to high humidity and lack of regular cleaning. They can climb from neighboring apartments, rise from basements, or descend from attics through shafts and ventilation pipes. In addition, they can enter the house with seedling soil or indoor plants.

Woodlice also often inhabit:

  • In closets and basements, especially if there is high humidity;
  • In dark corners under the sink and behind baseboards;
  • Under damp rugs or linoleum;
  • In old cabinets;
  • In the joints between tiles;
  • In the drain hoses of washing machines;
  • In plant stands;
  • Under the rapids;
  • In various wet rags.

Ways to combat woodlice

On the one hand, woodlice are not the worst parasites. They do not bite or drink blood, which is why they seem more harmless compared to some other insects. However, they can spread lichens, fungi and other microorganisms, as well as damage indoor plants, so the damage from their proximity can be serious. Moreover, their appearance indicates high dampness and dirt in your home. Both chemicals and traditional methods will help you get rid of woodlice in the bathroom.

Microclimate change

If your bathroom has high humidity, there are certain measures you should take. For example, if possible, keep the bathroom door open (especially at night) and ventilate the room regularly. Use towel dryers, fans, insulated floors or heaters to dry the air. Avoid leaving anything other than essential items in the bathroom after washing, so as not to increase the humidity in the room.

Thorough check

Check the condition of the piping as dampness can occur due to faults or holes in the pipes. Inspect your pipes for leaks and damage to prevent woodlice infestations in your bathroom. If woodlice entered your home through plant soil, replace it with cleaner soil and treat the area with insect repellent.


Woodlice do not like the smell of lime. Dissolve lime in water and leave the bathroom for several days. After this, ventilate the room and carry out wet cleaning.

Special traps for woodlice

Use raw potatoes, cut into two halves, or brooms made from birch leaves. Place them in areas where woodlice live, such as the bathroom, and leave them overnight. In addition, salt absorbs moisture well, so sprinkle it in damp areas where you often see woodlice.

Red pepper and tobacco

Use red pepper and tobacco alone or in combination. Scatter them in places where woodlice live, or dissolve them with salt and treat the room with the resulting mixture.

Boric acid and bleach

Dissolve bleach (20 g per 1 liter of water) or boric acid (1 tsp per 0,5 liter of water) and treat the bathroom or other places where woodlice live with this solution.

Dry kvass

Dissolve dry kvass (100 g per half liter of warm water) and spray the woodlice habitats. After this, close the bathroom for 10 hours and wet clean.


Various insecticides, such as Get Total, Delicia, Schabengel, Combat Superspray, Tetrix and others, are effective in killing woodlice. Follow the instructions for use to get rid of woodlice and prevent them from reappearing in the bathroom.

Methods of prevention

To prevent the appearance of woodlice in an apartment, it is necessary to take a number of measures and eliminate all possible causes of their appearance. Here are some useful tips:

Regular cleaning

Regular cleaning of your apartment using disinfectants is a key step in preventing the appearance of woodlice. It is important to maintain a stable temperature level in the room. Do not leave wet rags indoors and always dispose of trash, especially if it contains food scraps.


If damage is found in the piping, such as cracks or gaps, repair or replace it immediately. Check the condition of the pipes regularly as any leakage increases the level of moisture and therefore the risk of woodlice.

Room ventilation

Rooms exposed to high humidity should be ventilated frequently and, if possible, doors should be kept open. After taking a shower or bath, carefully wipe away any wet marks on the floors and walls. These preventive measures prove to be very effective.

Caring for indoor plants

If you have a lot of indoor plants, carefully monitor the condition of the soil into which you transplant them. Also regularly check stands and plant pots for excess moisture, even in small quantities.

Checking the ventilation system

Regular checks of the ventilation system are important not only to maintain the required microclimate in the apartment, but also to prevent woodlice from entering through the ventilation shafts. If there is concern that this may happen, it is recommended that special mesh be installed over the ventilation openings.

How to dry a bathroom? Basic methods

As you know, moisture in the air can lead to the formation of mold and woodlice in the room. Constant humidity can create favorable conditions for the proliferation of fungi and parasitic insects. If you notice signs of moisture and mold in your bathroom or other room, it is important to take immediate steps to prevent unwanted guests. Here's what you can do to keep the air in your bathroom and other rooms dry:

  1. Check the plumbing: Carefully inspect all pipes, faucets and toilets for leaks. Any leaks can increase the level of humidity in the room, which contributes to the appearance of woodlice and mold.
  2. Provide good ventilation: Make sure your bathroom has functioning ventilation or install a fan. Regular ventilation of the room helps reduce air humidity.
  3. Treat the walls and ceiling: Paint the walls and ceiling with waterproof paint or apply a coating with a waterproofing effect. This will help prevent moisture and mold.
  4. Fight existing mold: If mold is found, dry the walls using a heater or a special hairdryer for construction work. In case of severe infection, it may be necessary to remove coatings and treat surfaces with antiseptics.
  5. Do a thorough cleaning: Before starting the drying process, thoroughly clean the room of dust, dirt and old things.
  6. Use additional devices: Install a fan, air conditioner or towel dryer. Special desiccant devices can also help keep your room dry.
  7. Follow certain rules: Avoid drying clothes indoors, preferring to hang them outside or on the balcony. Keep humidity levels below 60%.

Following these guidelines will help create a drier, healthier environment in your home, preventing woodlice and mold.

What to do if nothing helps?

If you cannot cope with woodlice on your own, it is recommended to contact a sanitary service. The devices and insecticides they use are highly effective and safe for people and animals.

If the woodlice infestation has become too widespread, it is recommended to join forces with your neighbors. Even with the help of professional exterminators, dealing with woodlice alone can be difficult, since they can reappear from neighboring apartments. Agree with other residents about joint actions. Check all communications in the house, such as grilles, hoods, chimneys, etc., paying special attention to those that often come into contact with water. Contact the sanitary service not individually, but as a group of residents of the house.

In order to avoid re-infestation with woodlice, it is necessary to eliminate all the conditions that attracted them to your bathroom: maintain cleanliness, avoid darkness and most importantly - maintain a normal level of humidity. Maintain order and hygiene by regularly cleaning all surfaces, ventilating your apartment and providing natural light by opening curtains to ensure dryness, warmth and good lighting, thereby protecting yourself from these nasty parasites and potential sources of disease.

How To Get Rid Of Woodlice

Frequently Asked Questions

How dangerous are woodlice to humans?

Woodlice do not pose an immediate danger to people, but they can serve as carriers of various diseases, molds and lichen. In addition, contact with woodlice can cause allergic reactions. Thus, they are not as harmless as they might seem and require proper attention and control.

Where do wood lice come from in the bathroom?

Woodlice can get into an apartment in different ways: through ventilation shafts, from the basement, or even with plants planted in untested soil. Given the right conditions, they can remain in your home, multiply and spread infections indoors.

Why do wood lice appear in the house?

The main reasons for the appearance of woodlice in the house are associated with high humidity, mold formation and insufficient cleanliness. These conditions create an attractive environment for woodlice, promoting their active reproduction.

What do woodlice eat in the bathroom?

In the bathroom, woodlice feed on mold, small pieces of paper and even dirt. Parasites can find all these materials in abundance if the room is not properly clean and tidy. Regular cleaning is one of the most effective means of prevention against woodlice.

fly speciesHow to get rid of flies on your property
The next
MosquitoesWhy do mosquitoes drink blood?

Without Cockroaches