How long before a pregnant woman can enter a room sprayed with insecticide?

It is inevitable that there will be a large number of insects in our daily lives, especially in the hot summer, which is the peak season for insect reproduction, so pesticides have become a chemical drug chosen by many families. However, pesticides contain a large amount of toxic substances, so it is not suitable for everyone to inhale pesticides for a long time, especially for pregnant women. So how long before a pregnant woman can enter a room sprayed with insecticide?

How long after spraying can I go indoors?

It is best to wait 3 hours after spraying before entering, and open windows and doors for ventilation for at least one hour after entering.

The reason why we wait so long after spraying before entering is, on the one hand, 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.

illustrate:

The pesticides sold on the market are all qualified products that have been inspected by relevant departments. As long as they are used correctly according to the requirements of the instructions, they are generally safe for the human body and the environment, so there is no need to worry too much.

Some people go indoors 30 minutes after spraying and there will be no impact.

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.

How to use household insecticides correctly

Correct use:

Spray directly at the pests, or close the doors and windows and spray randomly in all directions of the space so that the room is filled with the mist, which can kill mosquitoes, flies and other flying insects within minutes.

Open the doors and windows after at least 30 minutes and ventilate the room before entering.

For reptiles such as cockroaches, the aerosol should be sprayed evenly on the places where they appear, stay and live. To maintain the long-lasting effect of the medicine, it should not be wiped off after spraying.

Note:

1. Before spraying the medicine mist, all food, water sources, and cupboards must be sealed. It is best to use it after people have eaten to avoid contamination, and the medicine cans must be placed out of the reach of children.

2. You should take protective measures. It is best to wear long-sleeved clothes and a mask to prevent skin or respiratory poisoning.

3. Do not overuse. Excessive use may cause poisoning. Symptoms of poisoning include dizziness, nausea, blurred vision, and skin tingling. Once discovered, you should immediately stay away from the house where the pesticide has been sprayed. If the condition is serious, seek medical attention immediately.

4. When spraying pesticides, avoid high temperature environments and violent impacts. Some pesticides use flammable organic substances as solvents. Do not spray them towards fire sources to avoid danger.

How insecticides kill insects

1. How pesticides enter insects

Application of pesticide - insect body surface - enters and moves to the site of action - exerts toxic effect.

There are generally three entry routes: oral entry, body wall entry, and spiracle entry (the opening of the trachea on the body wall is called the spiracle).

2. Mechanism of the toxic effect of pesticides

Penetrates the epidermis:

Pesticides - digestive tract - skin cells - blood

Valve, nervous system

(1) Interfere with the normal physiological activities of pests and cause their death.

Such as: ①, changing the normal physiological metabolic pathways. ②. Increase or decrease the activity of metabolic enzymes in the body. ③. Metabolize and generate foreign substances.

(2) Interfere with the normal nervous system of insects, causing nervous system disorders and leading to their death.

For example, most nerve agents (agents that mainly act on the nervous system) mainly interfere with the normal transmission of nerve impulses in pests.

It causes the pest's nervous system impulse disorder, and the physiological and biochemical functions in the body cannot function normally, leading to its death.