WC-Ente Frische-Siegel Blau Azure Lagoon

WC-Ente, known internationally as Duck or Canard, is a prominent brand of toilet cleaners famous for its distinctive duck-shaped bottle neck. The brand was originally created by the Swiss entrepreneur Walter Düring in 1951, who developed the 'neck' design to allow the liquid cleaner to reach under the rim of the toilet bowl more effectively.

Today, the brand is owned and manufactured by S. C. Johnson & Son, an American multinational company. The product shown is the Frische-Siegel (Fresh Discs) variant, which uses a gel-based applicator rather than a traditional plastic cage. While S. C. Johnson has a global manufacturing network, these products are typically produced in various regional hubs to supply the European market, often localized with names like Duck (UK), WC-Ente (Germany), or Canard (France).