Fenwicks are a British company who have been producing some of the best cleaning products available today. Their products are made in the UK to the very highest of standards and surpass their rivals in performance and ease of use. Superior performance, and proud to be made in the UK. Fenwicks Waste Pipe & Tank Cleaner cleans and freshens waste tanks and toilet cassettes. Its powerful formula removes stubborn stains and unpleasant odours. It is the only product you need to clean the waste system and interior of your caravan or motorhome. Highly concentrated formula, guaranteed results