RE: dusting areas
When hunting a dust area, set 1 hen decoy low in a dust bowl, setup and let out a long string of lost yelps to get the attention of birds within hearing, then soft talk about every 15-20 minutes, as stated and watch for silent birds sneaking in. The 2yr.old birds that don't have hens with them are the targets, when hunting dust bowls during the onset of the season. Gobblers will patrol these areas looking for dusting hens. The decoy gives them what they want.
The birds will dust as long as the "critters" are biting and crawling; spring thru late fall. The young of the year will begin to dust as soon as the bugs start getting to them....