They were used mainly in Orchards to keep frost off the fruit when needed in northern states . If you google it you can find all you need
The old ones are the best a good average price is 100 ...make sure it comes with the wick to help keep it lit
There more of a west coast thing. Here in Texas it’s almost impossible to find, I just stumbled across the one that I have at an estate sale. I usually just run mine off of diesel but you can use diesel, kerosene, used motor oil, used vegetable oil, hydraulic oil, etc. they put off a lot of heat and hardly any smoke.
@185EZ ...Thats what I am talking about !!!...good one
And yes ...most all dont have the wick ...but if you do have it , you will understand how much better it runs and how much faster it ignites with a small propane torch . When you buy them some will have the wick rattling around in the bottom ..and most wont ....I have a few
Have had one for years, great if for whatever reason you don't want a lot of smoke from a campfire. We had a family member with breathing issues and he always missed out of campfires. I started bringing the smudge and we had the heat without the smoke. I burn a 50/50 of off road diesel and used motor oil in it.
There were everywhere in the orchards of Ca. until they were banned by the morons at CARB.