Like all our scents, Sow in Heat is guaranteed "one hog to one bottle," making it the most premium and effective hog urine on the market today. Just as it has no scent from other animals, Sow in Heat also contains 100-Percent natural hog urine-no fillers, fakes or additives. So when your trophy boar picks up the scent of a sow in heat, that"s all he"ll smell.