Coyles Stockholm Tar - Multiple SizesStockholm Tar is an especially high grade of pine tar which is used to treat cracked hooves and to seal wounds. Provides effective protection against biting insects such as horseflies, mosquitoes, stable flies, black flies and most other insects. Can also be used on lambs as a deterrent against predators. Stockholm Tar Stockholm tar is a 100% natural, all purpose tar, based on highly refined Beech Tree extract. Containing no additives, Stockholm Tar