Toilet Duck is a brand name toilet cleaner noted for the duck-shape of its bottle, so shaped to assist in dispensing the cleaner under the rim. The design was patented in the 1980s by Walter Düring from Dällikon, Switzerland. It is now produced by S. C. Johnson & Son.
Toilet Duck suppliers are becoming increasingly scarce in the United States. The Toilet Duck brand can also be found in the UK and in other countries around the world. In Germany, it is known as WC-Ente, previously produced by Henkel, and now by S. C. Johnson (Germany), in the Netherlands as "WC-Eend", in France as "Canard-WC", in Spain as "Pato WC", and in Portugal as "WC Pato".
Toilet Duck is now called 'Duck' in the UK and Ireland.
- Article about the invention and manufacture of the bottle at the Wayback Machine (archived September 27, 2007) (German)
- Henkel Produkte & Marken - WC Ente at the Wayback Machine (archived April 2, 2008)
- S. C. Johnson