Both permethrin and cypermethrin are insecticides. Their functions and effects can be summarized as follows:
1. Permethrin
1. Mechanism of action: Permethrin belongs to the pyrethroid class of insecticides. It mainly interferes with the insect’s nervous conduction system, having a contact killing effect and strong knockdown effect. It is particularly effective against household pests such as mosquitoes, flies, and cockroaches, but has a slightly poorer killing effect on cockroaches. It is usually used for repelling.
2. Application scope: Since the effect of permethrin alone is not very significant, it is usually mixed with other insecticides with strong insecticidal power and low toxicity to humans and animals to form spray or aerosol agents, and is widely used in households and public health fields.
3. Toxicity: Permethrin is a low-toxicity insecticide. According to animal experiment data, the acute oral LD50 of rats is 5200mg/kg, and the acute dermal LD50 is greater than 5000mg/kg, indicating that its oral and dermal toxicity is relatively low. In addition, it has no irritation effect on the skin and eyes, and no carcinogenic or mutagenic effects were found in long-term breeding of rats. However, it has high toxicity to bees and silkworms.
2. Cypermethrin
1. Mechanism of action: Cypermethrin is also a low-toxicity insecticide with both contact and stomach poison effects. It kills pests by interfering with the insect’s nervous conduction system and has strong knockdown effect and fast killing speed.
2. Application scope: Cypermethrin is widely used in the agricultural field and can be used to control pests on various crops such as vegetables, tea, fruit trees, and cotton, such as cabbage caterpillars, aphids, cotton bollworms, etc. At the same time, it also has good effects on household pests such as mosquitoes, flies, fleas, and cockroaches.
3. Toxicity: Although cypermethrin is a low-toxicity insecticide, care should still be taken during use. If accidentally sprayed on the skin surface, it should be washed with soap in time; if accidentally ingested, it may cause poisoning symptoms such as vomiting, abdominal pain, and diarrhea. Therefore, when using cypermethrin, relevant safety regulations should be followed and it should be properly stored to avoid accidents.
In summary, both permethrin and cypermethrin are effective low-toxicity insecticides with wide application scope. When using them, it is necessary to choose the appropriate insecticide according to specific needs and scenarios, and follow relevant safety operation regulations.
Post time: Nov-07-2025