I've developed a problem with igniting propane devices. When I try to light an insect fogger (which is fueled by a small propane bottle) the thing flickers for awhile then goes out. Same problem with a large outdoor space heater with propane tank. I light the pilot, wait about 15 seconds and turn to full on. The thing burns about 20 seconds, then goes out. Tanks are full in both cases.
Any ideas as to a solution to this problem?