There is a small vent in the kitchen where cockroaches will crawl in, is it useful to put a mothball

1. Environmental prevention and control Do a good job of indoor and outdoor hygiene, remove indoor garbage and keep the kitchen clean in the habitat, block the gaps in time, prevent and inbudate, doors and windows must be tight and seamless, and the wall holes that communicate with neighbors and outdoors should be blocked to prevent the egg sheath from entering the room, and the furniture and the whole box should be carefully checked to prevent cockroaches and their egg sheaths from being brought into the house. The sewers must be dredged frequently, and the openings leading into the room must be covered with small iron nets to prevent the sewers from climbing into the room. 2. The use of chemical insecticides is still the main means of killing cockroaches, which has the advantages of quick and high efficiency, but to prevent the occurrence of drug abuse such as increasing the concentration of use at will, in order to prevent the occurrence and development of pest resistance, attention should be paid to the compound and rotation of insecticides, and the commonly used methods are:

1) Residual spraying: It can have a rapid knockdown and lethal effect and has good residual effect. (2) Poison bait:

Spread it in the place where cockroaches often move, it should be less and more piled, so that pests have more opportunities to eat poisonous bait, as long as the poisonous bait has good palatability, good placement and high coverage, the killing effect is generally more satisfactory. (3) Cockroach chalk: Apply a medicine belt about 3 cm wide with a medicine pen in the place where cockroaches often come and go, which has a good killing effect on cockroaches.

3. Physical control Physical control is also a method to kill cockroaches, such as boiling water, sticky trapping, trapping, etc., which can be used as an auxiliary method.

Mothballs are ineffective against cockroaches, and if they are not professional, it is still recommended to use professional cockroach killers. All kinds of sprays are basically ineffective, and they can only be killed if they are sprayed. It can not play a role in comprehensive cockroach extermination, and the most useful thing on the market is to kill cockroaches.

It is more scientific and efficient. There are many more online, and you can compare and choose by yourself.

In the kitchen it is better not to put camphor. Since it is a small vent, if you can, you can make a small mesh at the vent, which will not affect the ventilation and can block mosquitoes and cockroaches.

I've read a book that says how to put a layer of soap on the place where the cockroaches pass so that there will be fewer and fewer cockroaches, you can try.