It contains a chemical called phenothrin. It used to be used to decontaminate aircrafts (with and without people on board) under the name Aircraft Aerosol Insecticide.

NB - you cannot buy this at your local grocery/hardware store. There is no other "roach killer" that can be substituted! They are toxic to snakes. You can usually find Black Knight online at the KS.com classified (caging/supplies classifieds). It is expensive ($15-20 can) but it lasts a long time since one treatment solves the problem forever.

There is a ton of information on the web about it, but be aware that much of it is from morons who claim to have suffered all sorts of vague symptoms after exposure (none of which could ever be substantiated or reproduced, oddly enough...hmmmmm....Can you say psychosomatic?). I (and millions of others) have been sprayed with it many times on airplanes when entering Australia. For decades, passengers (including me) used to think it was just "disinfectant". Then some people found out it was an insecticide and lo and behold....symptoms appeared.

The real data suggest that it is safe to terrestrial vertebrates. There are actually some decent toxicology studies available online as pdfs.
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Chris Harrison

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