Certified compostable bags can replace conventional plastic bags for many everyday tasks, including collecting food scraps, lining household bins and picking up pet waste.
However, compostable bags only provide their intended environmental benefit when they are matched with the correct disposal system. Before choosing a bag, check its certification and confirm whether it should go into home compost, a council FOGO service or general waste.
What Can Compostable Bags Be Used For?
Compostable bags are available in different sizes and formats for households, businesses and public spaces.
Common uses include:
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Collecting kitchen food scraps
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Lining household rubbish bins
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Managing garden and organic waste
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Picking up dog waste
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Lining office and commercial bins
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Supporting council and public-space waste programs
Always select the bag size, strength and certification appropriate for the task.
Kitchen Caddies and Food Scraps
Compostable liners can make collecting food scraps cleaner and more convenient. They help contain moisture, reduce mess inside the caddy and make it easier to transport organic waste.
Before placing a compostable liner in a FOGO bin, check your council’s requirements. Some councils accept only liners carrying a specific certification, while others supply approved liners or require food scraps to be placed loose in the bin.
Do not assume that every bag labelled “compostable” is accepted by your local service.
Household Rubbish Bins
Bonnie Bio compostable rubbish bags are available in sizes ranging from small multipurpose bags to large wheelie-bin liners.
They can be used for:
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Kitchen bins
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Tall bins
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Pedal bins
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Office bins
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Commercial waste bins
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Large household and wheelie bins
If the bag and its contents cannot enter an appropriate composting system, follow your council’s waste instructions. In some locations, general waste may be the only accepted disposal option.
Garden and Yard Waste
Certified compostable bags may be useful for collecting garden waste, but not every council accepts bagged garden material.
Some organics facilities require garden waste to be loose, while others accept only council-approved compostable liners. Check with your council before placing any bag in a green-waste or FOGO bin.
Dog Waste
Compostable dog poo bags provide a practical alternative to conventional plastic bags when collecting pet waste.
Dog waste can contain pathogens, so it should not automatically be placed in ordinary home compost or a council FOGO bin. Depending on local requirements, sealed dog waste may need to go into the general-waste bin or a dedicated pet-waste composting system.
Explore Bonnie Bio compostable dog poop bags.
How Can You Identify a Certified Compostable Bag?
Environmental claims such as “green”, “eco”, “degradable” or “biodegradable” do not necessarily mean that a bag is suitable for composting.
Look for:
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Recognised compostability certification
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The applicable Australian Standard
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Clear disposal instructions
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The intended composting environment
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Product dimensions and thickness
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Storage and shelf-life information
AS 5810 vs AS 4736
Australia has two principal compostability standards for plastic materials:
| Standard | Intended disposal environment |
|---|---|
| AS 5810 | Home-composting systems |
| AS 4736 | Commercial or industrial composting facilities |
Products certified to AS 5810 are tested for home-composting conditions, which generally operate at lower temperatures than commercial facilities.
Products certified only to AS 4736 require an appropriate commercial composting process and should not be assumed to break down effectively in an ordinary backyard compost bin.
Do Compostable Bags Break Down in Home Compost?
Bags certified to AS 5810 are designed to break down in a correctly maintained home-composting system.
Effective composting requires suitable:
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Oxygen
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Moisture
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Temperature
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Microbial activity
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Balance of green and brown organic material
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Composting time
Breakdown time varies according to the product and conditions. Avoid promising a universal timeframe, as a cold, dry or poorly maintained compost system will work more slowly.
Can Compostable Bags Go in a FOGO Bin?
Only when your council or waste provider confirms that they are accepted.
Some councils accept certified compostable caddy liners, while others prohibit all bags or accept only liners supplied by the council. Home-compostable certification does not automatically guarantee FOGO acceptance.
Always check your council’s current waste guide before disposal.
Can Compostable Bags Go in General Waste?
If composting or an approved organics service is unavailable, your council may direct the bag to general waste.
Compostable bags are unlikely to break down effectively in landfill because landfill conditions generally lack the oxygen and controlled biological activity required for composting.
The bag should never be placed in a conventional plastic recycling bin because compostable material can contaminate the recycling stream.
Choosing the Right Compostable Bag
Before purchasing, consider:
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What will the bag be used for?
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What size and thickness are required?
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Is it certified for home or commercial composting?
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Does your council accept it?
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Can you use the quantity within its recommended shelf life?
Bonnie Bio compostable bags are made from corn starch and available in sizes from 2–2.5 litres to 240 litres for homes, workplaces and commercial applications.
Explore Bonnie Bio compostable rubbish bags and bin liners, or call (03) 9460 5655 for assistance.
Frequently Asked Questions
Are all biodegradable bags compostable?
No. A biodegradable claim does not prove that a bag meets a recognised compostability standard. Look for certification to AS 5810 or AS 4736.
Can compostable bags go in household recycling?
No. Compostable bags should not be placed in conventional plastic recycling bins.
Can I put a compostable bag in my green bin?
Only if your council accepts it. Green-bin and FOGO requirements differ across Australia.
How long do compostable bags take to break down?
There is no universal timeframe. Breakdown depends on the product’s certification and composting conditions, including moisture, oxygen, temperature and microbial activity.
How should compostable bags be stored?
Store them in a cool, dry place away from heat, moisture and direct sunlight. Purchase quantities that match your expected usage and follow the stated shelf life.
Are Bonnie Bio bags home compostable?
Selected Bonnie Bio bags are certified to Australian Standard AS 5810 for home compostability. Check the individual product information for its certifications and disposal instructions.
