Description Keep your portable toilet clean with this high performance toilet fluid from Thetford. It breaks down solids and toilet tissue to leave you with a fresh smelling waste water tank. . .  Specification Effective water soluble sachets 15 pre-measured doses Easy to use Reduces and masks unpleasant smells Helps to prevent gas build-up Keeps your tank clean Suitable for winter camping One sachet treats 20 litres of waste holding capacity Not to be added to the fresh water tank , Video Thetford Aqua Kem: