Pine tar should be stored sealed, upright, away from heat and flame, and in a place where leaks, smell, and staining will not damage other materials.
Pine tar keeps best when the container is closed tightly after use. Exposure to air can thicken the surface, change the smell, and make the next application harder. Wipe the rim before closing so the lid seals properly and does not become glued shut by dried tar.
Store the container upright on a protected shelf or tray. Pine tar can stain wood, concrete, cardboard, fabric, and plastic containers around it. A secondary tray is sensible because even a small leak can spread slowly and create a difficult mess. Keep it away from food, animal feed, clean textiles, and indoor living areas.
Heat can soften tar and increase smell, while cold can make it thick and hard to use. A cool, stable, ventilated storage place is best. If the product includes solvents or oils, follow the label for flammability and disposal, and keep used rags outside the container unless the product specifically allows it.