How to use TrustBin - Indoor Kitchen Waste Bokashi Composter

2 comments / Posted on by Indu Priya K

How to use TrustBin - Indoor Kitchen Waste Bokashi Composter


TrustBin is a complete indoor composter that is designed for the Bokashi method of composting. This indoor composter helps in converting your kitchen scraps into compost, that can be used to your plants for their better growth and development. 

 Convert your daily kitchen wastes into valuable compost at home using the bokashi indoor composter. It is provided with trustbin compost maker (bokashi powder) which is a microbial inoculant that helps in converting wastes into compost without producing foul odours. It contains useful anaerobic microbes such as yeasts, lactic acid bacteria, purple non-sulfur bacteria. These microbes ferment the food waste which is further converted into compost and used for plants after maturation.

Go through the links below to know about other types of composting:
1. Composting and its types
2. Aerobic composting and its types
3. Anaerobic composting and its types
4. Vermicomposting
5. Special methods of composting (Indore, Banglore, Coimbatore, NADEP)

- bokashi Indoor composter provides all the essential materials that are required for composting indoors

The package contains the following materials:

  • Compost Bin ( 14 liters)
  • Tap
  • 1 Packet of Jaggery
  • Filter
  • Compost maker packet of 500 grams
  • Lid
  • Instruction manual
  • Coco peat of 650 grams 


Composting using Bokashi indoor composter: 

It is very easy to prepare compost using the bokashi method. We can prepare quality compost within no more than 40 days using this product. This composting should be done in two steps.

  •  Fermentation: Kitchen scraps should be fermented for 15-20 days in this step.
  • Maturation/curing: Fermented/pickled wastes should be layered with coco peat/soil alternately to allow the compost to mature for another 15-20 days. 


1. Fermentation:

It is a complete anaerobic process where anaerobic microbes take part in fermenting the wastes. You can either collect kitchen scraps for few days and add or add them on daily basis into the bin to start the process. Bokashi powder should be sprinkled for every two inches of kitchen wastes. Kitchen wastes get fermented within 15-20 days (depend on wastes added) by maintaining it indoors in airtight conditions..

Food wastes that can go into trustbin/bokashi composter: 

  • Rice, chapati, roti (make them into small pieces before adding)
  • Cut fruit peels
  • Cut vegetables
  • Cut coriander, mint, spinach, or amaranthus stems
  • Crushed eggshells
  • Dosa, idli, or any rice dishes in solid form (make them into pieces)

Food wastes that cannot go into trustbin/bokashi composter: 

  • Plastics, papers, or glass items
  • Curry, sambhar, rasam, or any other liquid items
  • Threads from flowers (threads won’t decompose, you can add just petals of flowers)
  • Hot/normal cooked food
  • Liquids
  • Raw/cooked meat (aids in bad smell)
  • Wood chips, garden wastes (as they take a long time to decompose).

Follow these steps to complete the first step of the bokashi method of composting

Steps to be followed to decompose the kitchen waste:

  •  Fit the tap to the bin by using the given washer and nut.

    fitting tap to trustbin
  • Add the jaggery at the bottom of the bin. This acts as food to microbes present in the liquid fertilizer.

    adding jaggery - Trustbin indoor composter

  • Now place the filter and place a single sheet of newspaper. This helps in better filtration of the liquid to the bottom.
    placing filter - Trustbin indoor composter single sheet of paper - Trustbin indoor composter

  • Add your kitchen waste like peels of vegetables and fruits, or vegetables leftovers, coriander/mint stems, onion peels, eggshells, etc.

    kitchen waste - Trustbin indoor composter 
  • Cut the kitchen waste into small pieces (1-2 inches) before adding them to the bin. This helps in better decomposition of the waste.

  • Add a layer of kitchen waste (not more than 2 inches thick), sprinkle the compost maker on top of it (about 2 tablespoons), and close the lid. Repeat this process daily until the bin is full. 

    bokashi powder layer on kitchen waste - Trustbin
  • Once the bin is full, add two table spoons of compost maker and close the lid. Keep it aside for 15- 20 days and make sure you close the lid tightly. As this decomposition process is anaerobic (occurs in the absence of oxygen) air should not pass through the lid.

  • after few days you can notice a white cottony growth on top (if opened).

  • From the 10th day(sometimes before the 10th day), you can start harvesting liquid fertilizer.

  • After 15 days, open the lid and check whether the kitchen waste is completely decomposed or not. If not keep it aside for few more days.

  • If the quantity of the kitchen waste is reduced and noticed turned black, then you can consider that it is decomposed completely.
    cottony growth on top of decomposing waste - Indoor composter
  • You should allow this decomposed waste to mature hereafter. After removing the pickled waste, collect the liquid fertilizer if left any and wash the bin properly.

  • Now the bin is all ready for the next round of decomposing.

Steps to collect liquid fertilizer:

 Fermentation results in producing liquid due to the breakdown of kitchen wastes. This liquid is also known as “bokashi tea” and acts as liquid fertilizer for plants.

  •  From the 5th day, you can start harvesting (collecting) the liquid fertilizer once in 2-3 days of interval.
    collecting liquid fertilizer - Indoor composter
  • Dilute the liquid fertilizer with water in the ratio of 1:30 and use this liquid once in 20-30 days to fertilize your plants.

Steps to loosen the coco peat block:

Setup has a coco peat block as it is used in the process of maturation of the compost.
650 gm of coco peat block - Indoor composter

  •  Place the coco peat in any container and add 1.2 to 1.5 liters of water.

    adding water to expand coco peat block - Trustbin
  • Wait till the block expands completely. Stir for even expansion.

    expanded cocopeat - Indoor composter
  • Let the coco peat dry under shade if you have added more than the required amount of water.

 coco peat - trustbin Indoor composter

2. Maturation:

After fermentation, leftovers can be either buried in the garden or can be layered with coco peat for maturation. Leftover should be allowed to cure for 15 - 20 days so that it will be ready to fertilize the plants.

Instruction for making compost with leftover/decomposed/fermented kitchen waste (curing/maturation process) :

  •  Take any container that has no holes at its bottom.

    container for curing - indoor composter

  • Spread a layer of coco peat followed by a layer of decomposed kitchen waste. Repeat this until the pickled waste gets over.

    layer of coco peat -  Indoor composterkitchen waste on coco peat layer - trustbin indoor composter
  • Cover the container with newspaper or any lid and let it decompose for 20-25 days.

    covered curing bin - Indoor kitchen composter
  • Mix this well once in 3 days for better decomposition. But don’t overdo it.

    slightly turning the layers - kitchen composter
  • After 15 -20  days you can use this compost to plants according to your requirement, once in 20-30 days of the interval by storing it.

    compost after 3 weeks - Trustbin indoor composter adding kitchen compost to plants - Trustbin indoor composter
  • From next time you can do the same even by using soil.


Dos and don'ts of trustbin/Bokashi indoor composter:

  • Do cut the vegetables, peels, stems into small pieces.

  • Do harvest the liquid fertilizer from time to time for better decomposition.

  • Don’t save the kitchen waste for many days and add it at once.

  • Add the kitchen waste once/day. No need of letting them dry. 

  • Do not open the bin more than once a day as opening several times kills the anaerobic microbes. 

  • Don’t forget to sprinkle the compost maker after every addition of scraps.

  • Don’t add cooked food into trustbin. Especially watery items like dal, sambhar.

  • Don’t add raw/cooked meat, fish into trustbin. This imposes a bad smell and takes a long time for decomposition.

  • Don’t add more than 1.5 liters of water to expand the coco peat.

  • Don’t over mix/turn the compost during the curing process.


Trust bin is absolutely easy to use. And there won’t be any foul smell coming out of it. By using it, anyone can make their compost on their own. Buy compost bin online at a competitive price from TrustBasket and prepare compost for your garden right at your home. 

Frequently asked questions: 

1. Can I put citrus rinds in the bokashi bin?

Generally, citrus rinds alter the pH of the bin and create acidic conditions which are not suitable for the aerobic microbes. But it is not a problem with the bokashi method as the composting occurs in an acidic medium. So you can put citrus rinds in your bokashi bin.

2. Is it harmful to use the compost if it developed maggots during the curing process?

Maggot development during maturation is quite common and it mainly happens due to excess moisture in the bin. Although maggots do not harm your compost/soil/plants, follow these steps if you want to keep maggots away.

  • Harvest the liquid fertilizer from time to time.
  • Make sure the pickled waste is not too watery while you leave it for maturation.
  • Make sure that the soil/coco peat that you use for curing is not wet.

3. What if I noticed fungus/mushrooms in the bokashi bin?

White moldy growth on the top of fermented wastes is always a good sign in the bokashi method of composting.
The development of mushrooms in the compost bin is also a common thing that they grow due to the excess nutrient content in the organic wastes.

4. What if the pickled waste didn’t ferment completely after 15 days?
In that case, you can allow the wastes to ferment for few more days. Fermentation completely depends on the type of wastes you add to the bin. It also depends on the size of the contents. So it would be better if you cut the wastes to a length of 1 - 2 inches long. 

5. Can I store the bokashi compost for future use?

Yes. any compost can be stored in a cool and shaded/dark place to use for future use. Make sure that your compost has 30-40% moisture all the time while storing. Exposing the compost to direct sunlight/letting it dry may lead to fertility and microbes deterioration. 

6. Why does my bin smell bad?

 Usually, the compost bin should possess a sweet-sour pickle smell. If you sense any bad smell it means you did something wrong with trustBin. These could be the reasons:

  • Adding bad waste as mentioned above
  • Not adding sufficient compost maker
  • Not closing the lid properly (on daily basis)
  • Not draining the liquid regularly (once in 3 days)
  • Placing the bin in heat (near to window/outdoors)



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  • Posted on by TrustBasket

    @mitavalvekar You can also maintain 2 bins to have a continuous supply of kitchen compost to your plants.

  • Posted on by Mita Valvekar

    Do I need to keep 2 pots so that the second one is used when the first pot is decomposing for the 15 days Needed by this first to decompose

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