Thetford Aqua Kem Blue is a powerful and easy to use toilet fluid for the waste holding tank, which offers the best performance for your Cassette or portable toilet.__ Combined with Thetford Aqua Rinse and Aqua Soft, it's ideal for daily use in your mobile toilet.__How to use:_1 - Dose 120 ml per 20L waste-holding tank capacity_ 2 - Add 3L of water to ensure optimal performance of the toiletSuppresses unpleasant smells Reduces gas build-up Stimulates the breakdown of solids and toilet paper, which results in easier emptying Keeps the waste-holding tank pure and clean Protects moving parts & extends the lifespan of the toilet Lasts 4-5 days with average use