I was working putting siding on a new house way back before I got a few brain cells. There was a wasp nest built under the deck. All I had with me at the time was wd-40. It didn't seem to kill them when sprayed on, so I decided to use a lighter and flambe' the suckers. Damn if that brand new wooden deck soaked in light oil didn't decide to catch on fire. A hectic 10 minutes of throwing sand on the fire and I got it out! Thankfully the ground in that area was all sand and small rocks. As I was covering the underside of the deck with aluminum soffit material anyway, nobody saw the soot marks and I still got paid for the job. The moral of the story is; be careful if using fire.