Do I need to remove the wrapper on Loo Cleaner Tabs?Updated 13 days ago

No. Drop the tab straight into the toilet bowl or cistern, wrapper and all. The wrapper is part of the product and dissolves away once it hits the water. Removing the wrapper is not needed and is not recommended. The film is a thin PVOH (polyvinyl alcohol) layer designed to encapsulate the concentrated cleaning powder inside the tab. This protects your hands from direct contact with the alkaline concentrate, which can irritate skin. The wrapper also keeps the cleaning agents stable in storage so the tab works as designed when you drop it in. The same wrapper technology is used in laundry pods and dishwasher pods. If you accidentally tear the wrapper before dropping the tab in water, just drop it in 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 pods, dishwasher tabs, 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 PVOH film breaks apart at the molecular level and dissolves completely. PVOH is sometimes called PVA in casual industry use, though strictly speaking PVA refers to a different polymer (polyvinyl acetate). In cleaning products, when you see PVA wrapper or PVOH wrapper on a label, they refer to the same water-soluble film. The film is biodegradable and dissolves rapidly so it will not persist in aquatic ecosystems. The wrapper also dissolves in cistern water if you use the cistern method, so the cleaning solution flushes through cleanly.

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 rapidly dissolves so it does not persist in aquatic ecosystems. This eliminates the microplastic concern often raised about other plastic packaging. Koh's overall septic-safe credentials (no chlorine bleach, no phosphates, no synthetic fragrances, no VOCs) carry through to the wrapper as well. PVOH biodegradability is a debated topic in some recent academic literature, with most studies confirming biodegradation under standard wastewater treatment conditions. The cold water-soluble grade used in Loo Cleaner Tabs is specifically formulated for rapid dissolution and biodegradation. For a deeper look, see our dedicated article on Koh sheet and tablet products and plastic.

The wrapper used in Koh Loo Cleaner Tabs 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. The fizzing from the dissolving tab helps agitate the wrapper and speeds breakdown. If you live in a very cold climate where winter toilet water sits 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.