U.S. consumers should not use any of nine brands of possibly toxic hand sanitizer that may contain methanol, or wood alcohol, a substance that's potentially dangerous when absorbed through the skin or ingested, the Food and Drug Administration warned. The agency's alert comes at a time when hand sanitizers are in especially heavy demand due to the coronavirus pandemicthat has public health officials urging consumers to frequently wash their hands. In issuing its warning Friday, the FDA said the Mexico-based manufacturer Eskbiochem SA de CV had rebuffed its request that it remove the "potentially dangerous products" from the U.S. market. Agency tests found samples of one product, Lavar Gel, contained 81% methanol and those of CleanCare No Germ contained 28%.