Should I remove the wrapper on the Loo Cleaner Tab?Updated 8 hours ago

No. Leave the wrapper on and drop the tab straight into the toilet bowl or cistern, wrapper and all. The wrapper is part of the product and dissolves away as soon as it hits the water. Removing it is not needed and is not recommended. The film is a thin cold water-soluble PVOH layer, short for polyvinyl alcohol, designed to encapsulate the concentrated cleaning powder inside the tab. That keeps the concentrate off your hands, because direct contact with the powder can irritate skin. The wrapper also keeps the cleaning agents stable in storage so the tab performs as designed when you drop it in. The same wrapper technology is used in laundry and dishwasher tablets. If you accidentally tear the wrapper before dropping the tab in water, drop it into the bowl as soon as you can and wash your hands.

PVOH stands for polyvinyl alcohol. It is a water-soluble polymer used widely as a protective film in laundry tablets, dishwasher tablets, and toilet cleaning tablets. The film used in Koh Loo Cleaner Tabs is a cold water-soluble grade, formulated to break down rapidly even in unheated water. On contact with water the film breaks apart at the molecular level and dissolves completely. PVOH is often called PVA in everyday industry use, though strictly speaking PVA refers to a different polymer, polyvinyl acetate. On cleaning product labels, PVA wrapper and PVOH wrapper mean the same water-soluble film. The film is biodegradable and dissolves rapidly, so it does not persist in aquatic ecosystems. It dissolves in cistern water too, so the cleaning solution flushes through cleanly if you use the cistern method.

Yes. The PVOH wrapper used in Koh Loo Cleaner Tabs is biodegradable and dissolves fully in water, leaving no residue. It does not accumulate in septic tanks, does not harm the beneficial bacteria your septic system relies on, and dissolves rapidly rather than persisting in aquatic ecosystems. That removes the microplastic concern often raised about plastic packaging. Koh's wider septic-safe credentials carry through to the wrapper as well: no chlorine bleach, no phosphates, no synthetic fragrances, and no volatile organic compounds.

More on the wider formula in Are Loo Cleaner Tabs safe for septic environments?.

The wrapper is a cold water-soluble PVOH grade, so it dissolves rapidly even in unheated toilet water. Most of the film breaks apart within the first minute or two of contact, with full dissolution typically complete within a few minutes. Warm water dissolves the film noticeably faster, and the fizzing from the dissolving tab helps agitate the wrapper and speed the breakdown. In a very cold house in winter, where the cistern water sits well below room temperature, you may notice slightly longer dissolve times. Either way, by the time you have finished scrubbing with the Loo Blade and the solution has had its few minutes to work, the wrapper is fully dissolved with no trace.

Loo Cleaner Tabs 14pk

Individually wrapped tablets with a cold water-soluble PVOH wrapper. Drop in, fizz, scrub, flush.

Loo Blade

TPE blade with a handmade ceramic pot for storage. Pairs with Loo Cleaner Tabs.