Thermacell works great... Kept away the hordes of skeeters and blackflies last spring in MAINE the first week of June...

They don't make any noise, except a very light "click" when you press the igniter button..

There is some odor, but turkeys have little or no sense of smell, so that's not an issue...

Despite the odor, I've heard that some bear and deer hunters have had good luck with them, too, and bears and deer certainly DO have a sense of smell..Never tried it for those critters, but for turkeys in the spring they are just the nuts....