What Can Be Composted?

The GreenGood composter is specifically designed to compost food waste, but it can also compost manure, animal feces and other organic waste. Please see the OWS independent study and report on the quality of our compost by clicking here.

Read our Frequently Asked Questions for more information.

Category 1
Food Waste Cooked Raw
Fish Yes Yes
Fish Bones Yes Yes
Meat Yes Yes
Meat Bones No No
Poultry Yes Yes
Poultry Bones Yes Yes
Vegetables Yes Yes
Fruits Yes Yes
Fruit & Vegetable Peels Yes Yes
Pasta Yes Yes
Rice Yes Yes
Bread & Pastry Yes Yes
Egg Shells Yes Yes
Coffee Grinds Yes Yes
Tea Bags Yes Yes
Lobsters Yes Yes
Lobster Shells Yes Yes
Crabs Yes Yes
Crab Shells Yes Yes
Shrimps Yes Yes
Shrimp Shells Yes Yes
Mussels Yes Yes
Mussel Shells Yes Yes
Clams Yes Yes
Clam Shells Yes Yes
Oysters Yes Yes
Oyster Shells No No
Category 2
Manure & Feces Yes No
Hog Yes -
Cattle Yes -
Horse Yes -
Dog Yes -
Category 3
Packaging & Yard Waste Yes No
Yard Trimmings - No
Compost-able Packaging Yes -
Paper & Paper Board Yes -
Paper Napkin Yes -
Category 4
Other Yes No
Other waste materials - No

Frequently Asked Questions

If there is anything that hasn’t been addressed, please feel free to contact us.

How safe is the compost produced by the machine?

Our machines were tested by OWS and in their study they concluded that good hygiene material is obtained from our composting machines. The study and results are available for viewing here.

What happens to the food waste in the GreenGood composter, and how long does it take to compost?

The process reduces the volume of waste by 95% by evaporating water and discharging carbon dioxide gas. The remaining 5% is turned into compost. It takes from 12 to 24 hours for food waste to be composted.

How do I optimize the performance of the composter?

The composter performs best when different food waste types are mixed together. It performs less well on food waste of a single type such as only vegetable waste, or only bread and pastry waste.

How does composting cooked food waste compare with composting raw waste?

Typically, the composting machine processes cooked food much faster in 10 to 12 hours to complete the cycle. The cycle time will be longer for raw food waste such as eggshell, meat, poultry, fish and crustacean. The rule of thumb is the more raw contents you have in the food waste the longer the cycle takes to compost, especially if the raw contents are red and poultry meats.

The compost derived from food waste with both raw and cooked contents is highly recommended for use as fertilizer

How should the compost be used?

After removing the compost from the unit, allow it to sit for a period of 3 to 4 weeks before using it as fertilizer. The recommended ratio for application is to mix ten parts of soil to one part of compost fertilizer.

Can I use the same machine to compost food waste, and other sources like manure or animal feces?

Yes, but be aware that any compost intended for use as fertilizer from non-food sources like animal feces or manure should be lab-tested first for absence of e-coli and salmonella bacteria. Consider using a separate GreenGoodComposter for non-food composting if this presents a problem.

What happens if only allowable Category 3 items are put into the composter?

The composting cycle will take much more time to complete, perhaps up to several weeks.

What are the “other” waste materials that should not be put into the composter?

Plastics, metals, construction waste, textiles and wood in the form of toothpicks or chopsticks.