Here's something you probably haven't thought about: that sponge by your kitchen sink is made of plastic. So is the cloth you wipe the surfaces with. Every time you use them, they shed microplastics into your home and down the drain. When you throw them away — which you do every few weeks — they sit in landfill for hundreds of years.
Seep was founded to fix this. Every product they make is plastic-free, biodegradable or compostable, and made from renewable materials. They're the kind of brand that makes you wonder why the entire cleaning aisle isn't already doing this.
Why Seep is on Ethical Supply
Seep's founder Laura Harnett spotted something obvious that the big brands had ignored: while the eco cleaning liquids aisle was thriving, every sponge, cloth and pair of rubber gloves on the shelf was still made from plastic. She launched Seep in 2020 to fill that gap, and over 250,000 UK households have made the switch since.
They're a certified B Corp with a score of 108.6 — the highest of any cleaning product company worldwide. That's not a marginal lead; the median score for businesses completing the assessment is 50.9. They've also earned B Lab's 'Best for the World' designation, which puts them in the top 5% of all B Corps globally.
Beyond certification, Seep is carbon positive. They invest in forest regeneration projects that remove 3.5 times the carbon they emit. Their products have up to 40% lower carbon footprint than conventional cleaning tools. And none of their products are tested on animals or contain animal products.
In 2025, Seep appeared on Dragons' Den and secured backing from Deborah Meaden and Trinny Woodall — two Dragons who don't invest lightly. It was a validation of both the product quality and the business model.
What Seep makes
Seep's range covers the everyday cleaning essentials you'd normally grab from a supermarket — but every product is designed to biodegrade or compost at end of life.
Sponges and scourers
Their best-selling eco sponge scourers are made from natural cellulose with a loofah scourer layer. Zero microplastics, fully compostable, and they clean just as well as the plastic ones. They come in various sizes and textures for different surfaces — from non-scratch for delicate cookware to heavy-duty for baked-on grime.
Cleaning cloths
Seep's all-purpose cloths are made from lyocell and sustainably sourced bamboo viscose. They're plastic-free, absorbent, and machine washable. When they eventually wear out, they biodegrade rather than sitting in landfill.
Rubber gloves
FSC-certified natural rubber gloves with a 100% natural cotton flock lining. They're ethically made, compostable, and far more comfortable than the cheap plastic alternatives. A small thing, but one of those swaps you notice every time you use them.
Compostable bin liners
Made from Mater-Bi, a plant-based material manufactured by Novamont in Italy. They're genuinely compostable — not just labelled as such — and strong enough for everyday kitchen use.
The bigger picture
The UK throws away billions of plastic cleaning items every year. Sponges, cloths, scourers, gloves — most of them are used for a few weeks and then binned. Seep's mission is to eliminate 1 billion of those items from landfill by 2030.
What makes their approach work is that it doesn't ask you to change your habits. You still buy sponges, cloths and gloves — you just buy ones that won't outlast you in a landfill. The products look good, they're widely available in UK supermarkets and online, and they perform as well as (or better than) conventional alternatives.
Who Seep is good for
Seep is a good fit if you want to make your cleaning routine more sustainable without any real effort. These are direct swaps — same products, same routine, just without the plastic. If you're already buying eco washing-up liquid or laundry detergent, Seep fills in the gap for the tools you actually clean with.
Prices are a little higher than the cheapest supermarket options, but competitive with other eco brands. And when the alternative is shedding microplastics into your home every time you wipe a surface, the trade-off feels pretty straightforward.