Do I need to remove the wrapper on Loo Cleaner Tabs?Updated 7 hours ago
TL;DR: No. Drop Loo Cleaner Tabs directly into the bowl or cistern without removing the wrapper. The PVA (polyvinyl alcohol) film is designed for your protection (it prevents direct skin contact with the concentrated cleaning formula) and dissolves readily on contact with water. The wrapper is biodegradable and leaves no harmful residue.
Last reviewed: April 2026
Do I need to remove the wrapper on Loo Cleaner Tabs?
No. Drop the tab straight into the bowl or cistern, wrapper and all. The wrapper is part of the product and dissolves away once it hits the water. Removing it isn't needed and isn't recommended. The film is a thin PVA (polyvinyl alcohol) layer designed to hold the concentrated cleaning formula inside until it reaches the water, so handling the tab barehanded doesn't expose your skin to the concentrate.
✓ Leave the wrapper on
The wrapper protects your skin from the concentrated cleaning formula. Removing it means direct contact with the alkaline concentrate, which can irritate skin. Drop the tab in the bowl or cistern as-is.
What is the PVA wrapper made of?
PVA stands for polyvinyl alcohol. It's a water-soluble polymer used widely in laundry pods, dishwasher tabs, and cleaning products as a protective film. On contact with water, the PVA film breaks apart at the molecular level and dissolves completely. It doesn't leave behind microplastic fragments, and it's classified as biodegradable by the Australian and international standards bodies that regulate it. The film typically fully dissolves within 10 to 15 minutes in cold water, faster in warm.
✓ Water-soluble, biodegradable
Polyvinyl alcohol is a water-soluble polymer used widely in laundry pods and dishwasher tabs. It dissolves on contact with water, is classified as biodegradable, and leaves no microplastic fragments behind. Typical dissolution time is 10 to 15 minutes in cold water.
Is the PVA wrapper safe for septic systems and the environment?
Yes. PVA breaks down completely in water through a combination of dissolution and microbial biodegradation in wastewater treatment plants and septic systems. It doesn't accumulate in tanks, doesn't harm septic bacteria, and isn't flagged as an environmental contaminant by regulators in Australia, the EU, or the US. Koh's overall septic-safe credentials (no bleach, no phosphates, no synthetic fragrances, no VOCs) carry through to the wrapper as well. For a full breakdown of PVA and the environment, see our dedicated article below.
✓ Septic safe, environmentally sound
PVA breaks down fully in wastewater treatment and septic systems. No tank accumulation. No harm to septic bacteria. Not classified as an environmental contaminant by Australian, EU, or US regulators.
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