Please, please, please, please, please ........ don't fog.  Most pests are descendants of pests subjected to fogging.  Those pests survived the fogging, and then mated with other pests who survived that fogging.  Their descendants are resistant to the fogging materials.  They seem to die, but if you give them an hour, they "come back to life" and go into hiding, where they reproduce without contact with pesticides.

If you don't know what the pest is, or where it came from, or where it lives, don't try to kill it on your own.  You will only make it more difficult for the professional who is finally called upon to solve the problem.

Second, don't throw away the evidence of the pest before talking with the pro you eventually call.  He might need it to identify the pest.

Third, don't try flamable materials for killing bugs.  People burn down their houses every year trying this "proven" method.