Posted 11/28/2012 07:36 (#2721047 - in reply to #2720442) Subject: Propane guns
The Pioneer guys had small 5 gal propane tanks and plastic boom guns on our seed milo this year. Seemed like 2-3 per field. They go off every 5 minutes or maybe 10. I think the propane lasted a long time. They are loud. Will scare you to death if riding by on four wheeler.