This Duo tank cleaner is a powerful concentrated cleaner for wats eholding tanks and grey water tanks. It removes scale, encrusting and grease deposits from both tabks and leave a pleasan citrus frangance.

Thetford Toilet Bowl Cleaner has a unique de-scaling property, which easily removes soil and scale deposits. As a result this prevents growth of soil and creates a beautiful shine and brilliance. The thick concentrated formula coats the bowl for better cleaning and targets even the hard to reach areas of the bowl, leaving a fresh scent behind. 750ml.  See More Info.