Duck Aktiv-Gel Pine Fresh

Duck (originally known as Toilet Duck) is a prominent brand of toilet cleaner internationally recognized for its unique 'duck-neck' bottle design. This design was patented in the 1980s by Walter Düring in Switzerland to make reaching under the toilet rim easier.

The brand was later acquired by S. C. Johnson & Son, an American multinational privately held company. Today, Duck products are distributed globally, with manufacturing for the European market often centered in the Netherlands. SC Johnson remains the ultimate owner, managing the brand as part of its extensive household cleaning portfolio.