What is permethin?

Permethrin and tetramethrin are non natural, non organic controls of pest populations. They share membership in the same chemical control group, the pyrethroids. They control insect populations by attacking each individual insect's nervous system. They're particularly effective against such stubborn pests as cockroaches and mosquitoes.

But there are differences between the two. Permethrin is considered to be of low toxicity to mammals. It's absorbed poorly by the skin. In contrast, tetramethrin is very potent.