"Werner & Mertz GmbH is a medium-sized, family-run manufacturer of cleaning and care agents with headquarters in Mainz. The company emerged from the wax factory “Gebrüder ...
Werner”, which was founded in 1867. Werner & Mertz has sold shoe polish under the brand name Erdal since 1901. Household cleaning agents were added to the portfolio after the Second World War. The highest-selling brand is Frosch, which has offered environmentally friendly detergents since 1986. Werner & Mertz has used its brand names (besides Frosch, they are Erdal, tana professional, green care professional, Rorax, Emsal and Bionicdry) to adopt a market position of corporate social responsibility, environmental awareness and sustainability. Company owner Reinhard Schneider was awarded the 2019 German Environment Prize in recognition of his services to environmental protection." - (en.wikipedia.org 10.08.2021)