For all thoses who have trouble with the head constantly smelling, we discovered a product that virtually eliminates the odor. It's called "The Gonzo Odor Eliminator. You just hang it in the head and after 4 to 8 hours, no odor. Cost $5. It is supposed to last for 8 to 19 months then you just rejuvenate it by putting it in direct sunlight for 6 hours and your good for another 8 months.