Toilet Duck is an American brand name of toilet cleaner noted for the duck-shape of its bottle shaped to assist in dispensing the cleaner under the rim. The design was patented in 1980 by Düring AG from Dällikon, Switzerland.[2][3] It is now produced by S. C. Johnson & Son.
The Toilet Duck brand can be found in the United States, United Kingdom and other countries around the world. In Germany, it is known as WC-Ente, previously produced by Henkel,[4] and now by S. C. Johnson (Germany).[5] In the Netherlands and Flanders it is called "Wc-eend", in France it is sold as "Canard-WC" and in Italy as "Anitra WC".