The room was sprayed with insecticide, and it has been 5 hours since the windows were opened

If the ventilation is good, it's OK.

About 3-4 hours.

It takes at least three or four hours before you can go to bed after the room has been sprayed with insecticide. After spraying the room with insecticides, it is necessary to open the doors and windows for ventilation after half an hour to an hour, otherwise the insecticides are not easy to dissipate, and it will also cause harm to the human body. In a well-ventilated environment, it can generally be dissipated in three or four hours, and you can fall asleep only after the indoor smell is completely gone.

Insecticides can cause certain damage to the human respiratory system, causing dizziness, headache, cough and other adverse reactions.

Precautions for spraying pesticides.

When spraying insecticides indoors, operators should wear protective clothing, hats and gloves, and deal with sprayer leaks in time. Operators should be careful not to spray on people.

When spraying in the kitchen, it is necessary to store all the food and tableware, and when using cockroach bait at home, it is best to put it in the poison bait box, put it in the evening and harvest it in the morning, and pay attention to prevent children from touching or eating it by mistake.

When using electric mosquito coils, they should be kept away from fire and fire sources, and should not be near heat-sensitive objects, do not directly pick up and place mosquito repellent tablets with your hands, or touch the liquid medicine, and do not touch the metal parts and heating parts of the heater with your hands after the power is turned on.

The above content refers to People's Daily Online - open the window half an hour after spraying pesticides.

After spraying insecticides at home, you need to close the room for 30 minutes, and after the insecticide effect is fully exerted, open the window for ventilation, and generally wait for the smell of the insecticide to spread and disappear before entering the room.

The specific ventilation time should be determined according to the ventilation conditions at that time. For well-ventilated buildings, a few minutes is sufficient; For poorly ventilated places such as basements, it may take longer. If necessary, ventilation can be enhanced with the help of fans, etc. I hope my answer can help you.

It will also take at least half an hour before you can enter the house, because it will take at least half an hour for the insecticide to completely dissipate.

After spraying the room with insecticide, be sure to wait an hour before entering, only then can all the small bugs in the room be eliminated, and then ventilate for another hour.

In summer, there are a lot of mosquitoes indoors. At this time, many people will choose to use pesticides. However, some ingredients in pesticides can be harmful to the human body. So, after spraying the insecticide, it's best to go in after three hours, and also ventilate the room.

It usually takes more than half an hour to enter the house. Because pesticides contain harmful ingredients to the human body, if they are not completely volatilized, once inhaled into the human body, they will have a serious impact on people's health.

After spraying insecticide in the room, it is actually best to wait about an hour before entering the house, so as not to cause harm to the human body.

Insecticide is a relatively common insect repellent product, it can effectively remove mosquitoes in the house, etc., many people will often use insecticides, especially in summer. After spraying the room with insecticide, it is generally closed for half an hour, and then ventilated for at least two to three hours before entering, and if the smell is relatively large, it may need to be ventilated for 6 hours or more.

It has to do with ventilation.

1. Under normal circumstances, after spraying insecticides, the insects in the spraying area will die one after another within about 10 minutes. If you want to achieve a better insecticidal effect, it is recommended to close the window for about half an hour, and then open the doors and windows for ventilation.

2. If the ventilation is good, you can feel the presence of wind when you stand at the ventilation convection in the house. In general, the insecticide in the room will almost disperse after about 2-3 hours of ventilation, and you can enter the room. However, it is recommended that adults in the household first feel the pesticide in the home, and then let the elderly, children, and pregnant women enter the house when it is clear that the smell of the pesticide is weak.

3. But if there is no wind on the day, it is difficult for the indoor insecticide to dissipate, and it takes about 6 hours to enter the room.

Suggestion: It is best to kill insects after the family goes out, and try to extend the ventilation time.

After spraying with insecticide, it is advisable to close doors and windows.

After spraying insecticide, in order to maintain the indoor insecticide concentration and achieve a better insecticidal effect, it is recommended that all indoor personnel leave temporarily and then close the doors and windows for half an hour. After half an hour, the windows should be opened for ventilation. After the smell in the house has completely dissipated, people can enter the house and carefully wipe the bed with a rag.

Note: When spraying insecticides, masks and clothing must be worn to cover the face and**.

1. Insecticides should be placed in a place that children cannot reach when they buy them home (to avoid harmful places such as accidental ingestion and eyes by children).

2. After use, put it first, pay attention to ventilation, wash your hands immediately after use, and do not spray it on people or food.

3. Do not hit, damage or burn. Keep away from fire and do not throw it into the fire. Do not use pesticides in homes with pregnant women.

4. There are various insecticides on the market, which should be distinguished when buying (some are not suitable for bedroom use, for example: mosquito coils are also insecticides).

I am very happy to answer for you, the following cherry loss is the result of your inquiry; Spine grinding god can be entered in a room sprayed with insecticide for 3 hours. Because the insecticide is in a water state, it is combined with something in the air after the spray is over, if we go directly at this time, it may not be good for our body, so spraying insecticides can not directly enter the house, insecticides can kill mosquitoes, but they are also harmful to the human body, therefore, spraying insecticides, after half an hour, the windows should be opened for ventilation, ventilation for at least 1-3 hours, it is best to wait for the smell of pesticides to dissipate before entering the room.

You can enter after 30 minutes. The use of pesticides should be used sparingly as much as possible, and they should not be used when they are available; Minimize contact with pesticides, such as do not stay in the application room, leave immediately after application, open doors and windows after half an hour and fully ventilate before entering; Do not expose infants and children with immature brains to any pesticides; Be careful when using pesticides in the kitchen to avoid contaminating food and utensils.

Attention should be paid to the use of pesticides: 1. People should leave the room immediately after spraying, open the doors and windows after an hour and a half, and enter after ventilation and exhaust.

2. Do not use pesticides in the room where the child lives. In particular, infants and children whose brain development is not yet perfect, should not be exposed to any insecticides, including mosquito coils, especially inferior mosquito coils mixed with organophosphorus pesticides, pesticides are scattered in the smoke when burning, and are easily poisoned by infants inhaled, causing adverse effects on brain development.

3. Do not contaminate food and tableware when using pesticides in the kitchen.

4. Wash your hands in time after applying insecticides and insecticidal emulsifiable concentrate, and it is best to take a bath and change clothes if possible.

5. Do not increase the dosage in order to enhance the insecticidal effect. If you find that your family members or children are dizzy, nauseous, blurred vision, or stinging, you should leave the environment where insecticides have been used in time, and in severe cases, you should be sent to the hospital immediately.

After spraying pesticides in homes or warehouses, people should leave immediately, preferably after an hour and a half, and then enter the house after an hour and a half, open the doors and windows, and wait for adequate ventilation and exhaust before entering.

Insecticides are common mosquito repellent products in people's homes in summer, but few people know that many insecticides contain harmful ingredients to the human body. Many families use all kinds of aerosol insecticides, insecticidal emulsifiable concentrates, mosquito tablets, mosquito coils and cockroach tablets, etc., most of which use pyrethroid deltamethrin as the active ingredient for insecticide.

Although manufacturers label their packaging with the words "harmless to humans and birds", in fact, their insecticidal ingredients are not only toxic to humans, but also auxiliary ingredients are toxic to humans. If it is used every day and the doors and windows are closed when using it, it is easy for the public to inhale the organic solvent aerosol of the insecticide into the body, and long-term excessive inhalation will damage the liver, kidneys, nervous system and hematopoietic system of the person.

Insecticide poisoning is in the summer and autumn, many pesticides sprayed on crops are most prone to poisoning, when they spray insecticides, they may be poisoned by the pollution of the liquid or inhalation of the liquid in the air, and there are also poisoning caused by excessive concentration and direct contact with the original solution by hand; There is also a case of poisoning due to accidental ingestion of food contaminated with pesticides and inhale or self-dose of pesticides.

According to incomplete statistics, there are nearly 1,000 poisoning incidents caused by food, drugs, alcohol, etc. in the city every year, including nearly 100 poisoning incidents caused by pesticides.

The reason why it takes so long to enter after spraying is to ensure that there is no harm to the human body, and on the other hand, to ensure that the effect of the insecticide can be fully exerted.

Description: The pesticides sold on the market are all qualified products that have been inspected by the relevant departments, as long as they are used correctly in accordance with the requirements of the instructions, they are generally very safe for the human body and the environment, so there is no need to worry too much. Some people go inside 30 minutes after spraying, and it doesn't make a difference.

However, for pregnant women, in order to ensure the absolute safety of the fetus, it is recommended to wait a little longer before entering the room.

After indoor spraying of insecticides, it should generally be sealed for 30 minutes to ensure that the insecticidal effect is fully exerted; After that, open the windows for ventilation and wait until the smell of insecticide has dissipated before entering.

The time required for ventilation depends on the ventilation situation at the time. If it is well ventilated, a few minutes is sufficient.