Chrysanthemate esters

Tetramethrin is a potent synthetic insecticide in the pyrethroid family. It is a white crystalline solid with a melting point of 65–80 °C. The commercial product is a mixture of stereoisomers.

Phenothrin, also called sumithrin and d-phenothrin, is a synthetic pyrethroid that kills adult fleas and ticks. It has also been used to kill head lice in humans. d-Phenothrin is used as a component of aerosol insecticides for domestic use. It is often used with methoprene, an insect growth regulator that interrupts the insect's biological lifecycle by killing the eggs.

Imiprothrin is a synthetic pyrethroid insecticide. It is an ingredient in some commercial and consumer insecticide products for indoor use. It has low acute toxicity to humans through the inhalation and dermal routes, but to insects it acts as a neurotoxin causing paralysis. It is effective against cockroaches, waterbugs, ants, silverfish, crickets and spiders, among others.

Empenthrin (also called vaporthrin) is a synthetic pyrethroid used in insecticides. It is active against broad spectrum of flying insects including moths and other pests damaging textile. It has low acute mammalian toxicity (its oral LD50 is above 5000 mg/kg in male rats, above 3500 mg/kg in female rats and greater than 3500 mg/kg in mice). It is however very toxic to fish and other aquatic organisms (96-hour LC50 in Oncorhynchus mykiss is 1.7 μg/L, 48-hour EC50 in Daphnia magna is 20 μg/L).

Resmethrin is a pyrethroid insecticide with many uses, including control of the adult mosquito population.

Cyphenothrin is a synthetic pyrethroid insecticide. It is effective against cockroaches that have developed resistance to organophosphorous and carbamate insecticides.