Manufacturers do this to inform current owners and prospective buyers of the potential risks of using car seats and booster seats that may be missing important parts, labels or instructions and/or may have an unknown history, which could lead to less than optimal safe performance when needed.
Since 1955 a a refined extract of the chaga fungus has been manufactured and sold in Russia, Eastern Europe, and Japan for the treatment of stomach and intestinal diseases. There is now scientific research to support the claims of the folk medicinal uses.
When and where to find them: (ecology) Chaga can be found all year round since it persists on the tree for many years. It is most always found on yellow, or white birch. It's probably possible to find it on gray birch but gray birch is more likely to be infected with Piptoporus betulina, the birch polypore.