Product highlights
Material
Sustainability
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Purpose
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Soak Sponge
Plastic-free, biodegradable dish sponge made from plant-based cellulose. Ships flat, expands in water, sheds zero microplastics.
Product highlights
Material
Sustainability
Lifecycle
Purpose
Room
White
3 Sponges
Overview
Switch from a conventional foam sponge to a plastic-free dish sponge made from biodegradable cellulose. The Soak Sponge ships flat and compact (about 1/5 the size of a regular foam sponge), then expands the second water hits it. Clean dishes, counters, and most hard surfaces without shedding microplastics into your sink.
- Plastic-free, biodegradable cellulose
- Dishwasher-safe and boilable to sanitize
- Cleans dishes, counters, and most hard surfaces
Ingredients
Plant-based cellulose sponge body, no foam fillers or synthetic coatings. Absorbent, plant-derived, biodegradable, microplastic-free.
Use
1. Clean. Tackle dishes, counters, and most hard surfaces with a plant-based sponge that holds up to daily use.
2. Sanitize. Boil it or run it through the dishwasher (top rack) between uses to keep it fresh.
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Soak Sponge
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Shipping Information
Fulfilled within 1-2 business days and packaged in our minimal, fully recyclable signature boxes.
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Customer Care
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FAQ’s
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Contact Us
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Pop-up cellulose sponge that expands in water
Plastno's biodegradable cellulose sponge is a plant-based pop-up that ships flat and expands the moment it hits water. It's a plastic-free alternative to the polyurethane and polyester foam sponges that shed microplastics into your sink, your food, and eventually your waterways. Use it on dishes, counters, glassware, and most hard surfaces. Each sponge holds up for 2 to 6 months of daily use, far longer than the foam sponge you'd throw out every couple of weeks.
How the Soak Sponge works
1. Grab: Take a flat sponge from the pack and run it under warm water. It expands to full size in seconds.
2. Scrub: Wipe dishes, counters, or most hard surfaces. Cellulose is gentle on hands and on most kitchen finishes.
3. Rinse: Rinse thoroughly and let it air-dry between uses so it lasts longer.
Made from plant-based cellulose
Cellulose comes from plant fibers and biodegrades naturally when buried in soil or added to a backyard compost pile. It absorbs water like a regular sponge, handles daily kitchen use, and breaks down without shedding microplastics into waterways the way foam does.
Cleaner dishes, less plastic waste
A single foam sponge sheds microplastics into your sink and your food every time you wash. Multiply that by every kitchen, every week, every year. Switching to plant-based cellulose gives you the same absorbency, the same daily-use lifespan, and none of the petroleum.
What you won't find in Plastno
Human safe
Every Plastno product is made with plant- and mineral-based ingredients, free from the petroleum-based plastics, synthetic foams, added fragrances, and harsh chemicals found in conventional cleaning supplies. Safer for your home, safer for the people in it.
✗ Microplastic shedding
✗ Synthetic foams
✗ Petroleum-based plastics
✗ Added fragrances
✗ Harsh chemicals
✗ Synthetic dyes
✗ Antimicrobial coatings
Less plastic
From the product to the packaging, every Plastno purchase keeps single-use plastic out of your home and out of waterways. Packaging is intentionally minimal, just a clean paper wrapper and a curbside-recyclable cardboard box. No clamshells, no shrink wrap, no fancy inserts that add waste in the name of looking premium.
✓ Intentionally minimal packaging
✓ Plastic-free, recyclable paper wrapper
✓ Curbside-recyclable shipping box
✓ Paper-based tape
✓ Water-based inks
✓ No clamshells, shrink wrap, or extra inserts
Before you ditch your plastic sponge
Do kitchen sponges shed microplastics?
Yes. Research shows the average person sheds 0.68 to 4.21 grams of microplastics per year from conventional polyurethane and polyester foam sponges, which end up in food, sinks, and waterways. Plastno's biodegradable cellulose sponge cleans without shedding plastic and breaks down naturally when it wears out.
How long do Plastno Soak Sponges last?
Each sponge lasts 2 to 6 months with daily use. To extend the life of the sponge, rinse it thoroughly after each use, wring it out, and let it air-dry between uses. Boil it or run it through the dishwasher once a week to keep it fresh.
How should I care for Plastno Soak Sponges?
Boil it or run it through the dishwasher on the top rack to sanitize. When it's worn out, the sponge is biodegradable. Bury it in soil or add it to a backyard compost pile and it breaks down naturally with no plastic residue.
Is the Soak Sponge plastic-free?
Yes. The sponge itself is 100% plant-derived cellulose, with no polyurethane foam, no polyester, and no antimicrobial coatings. The 3-pack ships in plastic-free paper packaging inside a curbside-recyclable cardboard box, with paper-based tape and water-based inks.
How is the Soak Sponge different from the Scrub Sponge?
The Soak Sponge is the soft, ultra-absorbent option for daily dish-washing, counters, and spills. The Scrub Sponge adds a firm loofah side for cookware and stuck-on grease. Many shoppers keep both on hand for a full plastic-free kitchen setup.