Fully compostable caddy liners and poo bags made from waste potatoes

Absolutely. Our brilliant scientists have designed our bags to handle real-life waste, combining reliable strength with compostable materials. They’re made to do the job properly without hanging around like conventional plastic for generations. Strong when you need them. Born to disappear when you don’t!

Yes! Proper certification, not eco waffle! Kompost bags are made using BIOCENTRAL F750, a biomaterial certified OK compost industrial by TÜV Austria in 2025 in accordance with EN 13432.
The certification covers the material when made into film with a maximum nominal thickness of 165 microns. Kompost caddy liners are 21 microns thick, which is well within this certified limit. Many consumers have composted Kompost bags successfully at home. TÜV Austria certificate: TA8012508986

Kompost bags are made from our unique native starch (native = no nasty chemicals or modification) taken from waste potatoes and other certified compostable polymers. More than 30% of the material has come from waste potatoes and over 40% comes from renewable sources.
This combination gives the bags outstanding sustainability credentials by recovering food waste, whilst providing the strength needed for everyday use and reducing the risks posed by conventional LDPE materials that are not generally recycled and can generate microplastics for centuries to come when mixed with food waste and applied to agricultural land as bio fertiliser or digestate.

Please never litter, even though it is compostable. Disposal method depends on the product and your local council’s collection rules for food waste. However, most UK councils accept and may recommend compostable liners for food waste collection schemes. Used dog-poo bags should normally be placed in a designated dog-waste bin unless your local authority advises otherwise. Use it, tie it and bin it properly!

No. Kompost bags are unscented, though some people have said they smell like candy!

A waste potato is simply a potato that cannot be sold. This might be because it is too small, damaged during harvest, misshapen, or fails the cosmetic standards required by supermarkets.

Across the food system, a significant proportion of potatoes never reach consumers. Studies estimate that around 8-10% of potatoes are wasted in Europe.

In Europe alone, farmers harvest over 48 million tonnes of potatoes each year, meaning millions of tonnes are rejected before they ever reach markets.

At Kompost, we believe this valuable resource should not go to food waste creating harmful greenhouse gases like methane.

Through Komposts own farming operations, we grow around 100 million potato plants each year, and typically over 6,000 tonnes of potatoes are not suitable for the market. Instead of discarding them, we transform this material into thermoplastic starch, which is then used to make our compostable bags.

By doing this, we turn agricultural waste into a useful product, helping create a circular system where waste from farming becomes part of the solution to waste management. Now that's a cool idea!

Kompost is a British company with Ukrainian agricultural roots. Our waste potatoes are grown in Ukraine. Along with our own agricultural production, we actively support smaller farmers with alternative markets for their wonky potatoes.
Our R&D scientists work in the UK and Austria, the unique biopolymers and bags are made in Germany, Poland and Ukraine.