I dont know what it is but KILL IT!!!!! Just dont let CC use anything flammable cause he will almost light your house on fire. While i like fire, i can imagine someones house getting burnt down somehow. Id rather get a good gas mask and use the Chlorine & Ammonia trick. For added bonus get 1 of these(http://www2.northerntool.com/product/200203874.htm
) and if they start flying out another hole, you can burn them.