You can compost in an apartment using a sealed container, bokashi bucket, or vermicompost bin
Apartment composting works because you do not need a yard or outdoor space. The three main methods — indoor bins, bokashi fermentation, and worm bins — all fit under a sink, in a closet, or on a balcony. Each method handles different food scraps, takes up different amounts of space, and produces finished compost or fertilizer on a different timeline.
The choice depends on what you have room for, what smells you can tolerate during the process, and whether you want finished compost or a liquid fertilizer you can use on houseplants. None of these methods requires you to haul materials outside or wait months for results.
Key Takeaways
- Indoor compost bins with sealed lids and carbon layers work in apartments and produce finished compost in 2 to 3 months, but require regular turning and attention to moisture.
- Bokashi buckets ferment food scraps (including meat and dairy) in an airtight container using special bran, then the fermented material goes to a community garden or outdoor space to finish breaking down.
- Worm bins (vermicompost) use red wiggler worms to break down scraps in a contained bin and produce both finished compost and nutrient-rich liquid you can use on plants.
- All three methods keep smell and pests out if you follow the basic rules: seal containers tightly, balance wet scraps with dry carbon material, and avoid meat or dairy in regular bins.
- Finished compost from apartment bins works well for potted plants and balcony gardens but produces smaller amounts than outdoor composting.
Indoor compost bins for apartments
An indoor compost bin is a sealed container you fill with alternating layers of food scraps and dry carbon material (shredded paper, cardboard, or dried leaves). The bin sits under your sink or in a closet. You turn the contents every few days, and finished compost is ready in 8 to 12 weeks.
Popular models include the Lomi (electric, speeds up breakdown), Vitamix FoodCycler (dehydrates scraps first to reduce smell), and straightforward stainless steel bins with lids and a spigot at the bottom to drain liquid. Prices range from $30 for a basic bin to $400 for electric models. The trade-off is space and effort: you need to turn the bin regularly, monitor moisture, and keep a supply of dry material on hand.
This method works best if you have a small balcony or outdoor space where you can empty the finished compost, because the bin itself produces only a few quarts at a time. If you live in a high-rise with no outdoor access, the finished compost may pile up faster than you can use it.
Bokashi buckets for meat, dairy, and cooked food
A bokashi bucket is a 5-gallon airtight container filled with special bran that contains microbes. You layer food scraps (including meat, fish, dairy, and cooked food) with the bran, seal the lid, and let it ferment for 10 to 14 days. The bucket produces a strong vinegar smell during fermentation, which is normal and fades once sealed.
After fermentation, the contents look like wet, chunky paste. This is not finished compost yet — it needs 4 to 6 weeks in soil or a garden bed to fully break down. If you have no outdoor space, you can bury the fermented material in a large potted plant or donate it to a community garden. Many cities have community gardens that accept bokashi buckets from apartment dwellers.
Bokashi buckets cost $40 to $80, and you need to buy replacement bran ($10 to $15 per bag) every few months depending on how much you compost. The advantage is that you can compost foods that regular bins cannot handle. The disadvantage is that you still need an outdoor or community space to finish the process.
Worm bins (vermicompost) for small spaces
Vermicompost bins use red wiggler worms to break down food scraps in a contained, stackable bin. The worms eat the scraps and produce castings (worm poop), which is finished compost. The bin also drains a dark liquid called worm tea that you can dilute and use on houseplants.
A basic worm bin is a plastic container with drainage holes and a lid, stacked in layers. You add shredded paper, food scraps, and worms, then let them work. Finished castings are ready in 3 to 6 months. Popular kits include the Worm Factory 360 (stackable, $100 to $150) and simpler models like the Rubbermaid bin method (DIY, under $50). You need to order red wiggler worms separately — about 1 pound (roughly 1,000 worms) costs $20 to $40.
Worm bins produce almost no smell if managed correctly and fit easily under a sink or in a closet. The main drawback is that worms are living creatures that need the right temperature (55 to 77 degrees Fahrenheit) and moisture. If the bin dries out or gets too hot, the worms die. You also cannot compost meat, dairy, or oils.
What you can and cannot compost in apartments
In a regular indoor bin or worm bin, compost fruit and vegetable scraps, coffee grounds, tea bags, eggshells, and shredded paper or cardboard. Do not compost meat, fish, dairy, oils, or cooked food — these attract pests and create strong odors in a sealed apartment bin.
Bokashi buckets are the exception: they can handle meat, fish, dairy, cooked food, and oils because the fermentation process and airtight seal prevent smell and pests. However, the fermented material still needs to finish breaking down in soil or a garden bed.
Avoid glossy or colored paper, pet waste, diseased plants, and anything treated with pesticides. Shred cardboard and paper into small pieces so they break down faster and mix better with wet scraps.
Managing smell and moisture in apartment composting
Smell happens when the bin is too wet or has too much food scraps relative to dry material. The fix is straightforward: add more shredded paper, cardboard, or dried leaves. A good ratio is roughly 3 parts dry material to 1 part food scraps by volume. If the bin smells like ammonia, it is too wet — add more dry material and turn it more often.
Moisture should feel like a wrung-out sponge: damp but not dripping. If liquid pools at the bottom, drain it (most bins have a spigot) and add dry material. If the bin is too dry, add a little water or more food scraps.
Keep the lid sealed between uses to prevent fruit flies and reduce smell. If you notice gnats or flies, the bin is likely too wet or has exposed food scraps. Bury new scraps under a layer of dry material and let the bin sit sealed for a few days.
Where to use finished apartment compost
Finished compost from an apartment bin is perfect for potted plants, balcony gardens, and indoor houseplants. Mix it into potting soil at a ratio of 1 part compost to 3 parts soil, or use it as a top dressing around the base of plants. It adds nutrients and improves water retention in containers.
If you produce more compost than you can use, offer it to friends with gardens, donate it to a community garden, or check whether your city has a compost drop-off program. Some cities accept finished compost from residents and use it in parks or public gardens.
Worm tea (the liquid from vermicompost bins) can be diluted 1 part tea to 10 parts water and used to water houseplants weekly. It adds nutrients without the bulk of solid compost.
Cost and space comparison
| Method | Upfront Cost | Space Needed | Time to Finished Product | Ongoing Cost |
|---|---|---|---|---|
| Indoor bin (manual) | $30–$100 | Under sink or closet | 8–12 weeks | Shredded paper (free if you save mail/cardboard) |
| Electric indoor bin | $300–$400 | Counter or closet | 3–8 hours | Electricity only |
| Bokashi bucket | $40–$80 | Under sink or closet | 10–14 days fermentation + 4–6 weeks outdoor | $10–$15 per bag of bran (every 2–3 months) |
| Worm bin | $50–$150 + $20–$40 for worms | Under sink or closet | 3–6 months | None (worms last years) |
Frequently Asked Questions
Can I compost in an apartment without any smell?
Sealed bokashi buckets and well-maintained worm bins produce almost no smell. Regular indoor bins can smell like ammonia if too wet or like rotting food if exposed. The key is keeping the lid sealed, balancing wet scraps with dry material, and burying new food under a layer of paper or cardboard.
What do I do with the finished compost if I have no balcony or garden?
Use it on houseplants and potted plants indoors. If you produce more than you need, offer it to friends, donate it to a community garden, or check whether your city has a compost drop-off site. Some apartment buildings also have shared garden spaces where residents can use compost.
Will composting attract pests to my apartment?
Not if the bin is sealed and you do not compost meat, dairy, or oils in a regular bin. Fruit flies can appear if the bin is too wet or has exposed food, but they stay in the bin if it is sealed. Bokashi buckets and worm bins are airtight and do not attract pests when managed correctly.
How much space does a compost bin actually take up?
Most apartment bins fit under a standard kitchen sink, in a closet, or on a shelf. A worm bin is typically 2 feet by 1 foot by 1 foot. An electric indoor bin is about the size of a toaster. Bokashi buckets are 5-gallon containers. None requires more than a few square feet.
Can I compost if my apartment is very warm or cold?
Worm bins need temperatures between 55 and 77 degrees Fahrenheit — if your apartment is much warmer or colder, the worms may struggle. Regular indoor bins and bokashi buckets work in a wider temperature range. If your apartment is very hot, keep the bin in the coolest spot (usually under the sink or in a closet) and monitor moisture more often.