Are Koh sheet and tablet products free from plastic?Updated 10 days ago
TL;DR: The PVA film used to wrap Dishwashing Tablets, Loo Tabs, and Sensitive Laundry Sheets is water-soluble, biodegradable, and extensively tested. It is classified as safe by the U.S. EPA, shown to biodegrade at around 97% in wastewater treatment, and was chosen specifically to reduce direct exposure to cleaning agents for people with asthma or sensitivities.
What is PVA?
Polyvinyl alcohol (PVA) is a water-soluble, biodegradable material used across a wide range of industries including cleaning products, food packaging, textiles, and pharmaceuticals. It has been extensively studied and is classified as safe by the U.S. Environmental Protection Agency (EPA), which continues to support its environmental safety based on decades of research.
What does the research say?
Independent peer-reviewed testing using an OECD 303A wastewater-treatment simulation found that a representative detergent-film grade of PVA (PVOH 18-88) was extensively biodegraded during treatment, averaging approximately 97% removal in the plateau phase of the study.
The study also reported minimal sorption to sludge, meaning any small remainder passes out in effluent rather than accumulating. U.S. EPA E-FAST and EU EUSES modelling confirmed environmental exposures well below effect thresholds.
Why we chose PVA
PVA wrapping is used across several Koh products: Dishwashing Tablets, Loo Tabs, and Sensitive Laundry Sheets. It reduces direct contact with cleaning agents during handling, making these products a friendlier option for people with asthma or skin sensitivities. It also makes dosing mess-free and consistent.
GECA certification
Our cleaning products are GECA-certified by Good Environmental Choice Australia. This certification confirms our formulas are free from harmful chemicals, have a reduced impact on aquatic life, and avoid ingredients linked to respiratory or skin irritation. GECA also covers ethical manufacturing, fair labour practices, and compliance with environmental legislation.