A true duck quack does not come from your lungs or cheeks; it is driven entirely from your diaphragm.
Proper maintenance is the easiest way to ensure your call performs reliably. A dirty call is an out-of-tune call. Simple practices will keep it in peak condition: duck quack prep
Check decoy lines for tangles or damage. Clean decoys and repaint them if necessary. Ensure weights are secure. A true duck quack does not come from