Can mosquito coils still be used if they are expired

Maybe in life, many people don’t pay much attention to the issue of buying mosquito coils, but we cannot ignore the use of mosquito coils to repel mosquitoes. The improper use of some mosquito coils can actually easily cause impacts on human health. Therefore, when buying mosquito coils, we also need to pay attention to the correct choice. The following will give you a detailed introduction on whether expired mosquito coils can still be used?

Mosquito coils are divided into two types: safe and toxic. Safe mosquito coils use plant insecticides such as pyrethrum as the main raw materials, which can paralyze mosquitoes and kill them without causing any harm to the human body. Toxic mosquito coils are made of pesticides such as 666 and DDT, which can only repel mosquitoes but not kill them, and are harmful to the human body.

So, how do you identify whether mosquito coils are poisonous?

1. Non-toxic mosquito coils are finely processed, bright in color, and have strong adhesion. A plate of mosquito coils can be lit for about 6 hours and is not easy to extinguish. Toxic mosquito coils are coarsely processed, have large particles of impurities, weak adhesion, and are easy to break. A plate of mosquito coils can only be lit for about 6 hours.

About 4 hours, easy to extinguish.

2. When the safe mosquito coil is lit, the flame is white and the smoke is white or blue; when the poisonous mosquito coil is lit, the flame is green and black smoke is emitted. 3. After the safe mosquito coils are lit, the smoke is light and the smell is fragrant; after the poisonous mosquito coils are lit, there is a pungent smell that makes you dizzy. Be sure to pay attention when choosing mosquito coils in the future.

Pay attention to these usage methods of mosquito coils so that we can repel mosquitoes correctly and healthily. When buying mosquito coils, you also need to pay attention to the time and shelf life. The mosquito coils you buy must be regular and qualified, because cases of mosquito coil poisoning or adverse effects occur from time to time.