DEET

Hat tip @awakenedspecies

Many people do not make the connection that chemically based insect repellents that you put on your skin are the same as pesticides.

Most insect repellents on the market are loaded with toxic chemicals, including DEET, which is so poisonous that even the Environmental Protection Agency says you should wash it off your skin when you return indoors, avoid breathing it in and not spray it directly on your face.