Sasha CampbellComposting sounds like something you need a big backyard for, but that’s not true at all. You can compost right inside your home, even in a small apartment, without dealing with bad smells or annoying bugs.
Composting indoors helps cut food waste. It also makes rich soil amendments for your houseplants and supports a more sustainable lifestyle. The key is knowing how to do it right.
This is a beginner composting guide that you can follow.
What Is Indoor Composting?
Indoor composting is the process of breaking down food scraps and other organic waste inside your home instead of outdoors. Instead of relying on large compost piles, this method uses small containers or special bins that control moisture and airflow.
The goal is the same as outdoor composting: turning waste into nutrient-rich compost that helps plants grow.
When done properly, a well-balanced indoor compost pile should not smell rotten. And if it is properly maintained, it should not attract insects.
Benefits of Indoor Composting
Indoor composting helps reduce food waste while turning kitchen scraps into a nutrient-rich soil amendment for houseplants and container gardens. It also keeps organic waste out of landfills, where it can contribute to greenhouse gas emissions.
Another benefit is convenience. You can compost year-round regardless of the weather and create a useful product that improves soil naturally.
Over time, indoor composting can help you waste less and live more sustainably.
Perfect for Beginners
Composting indoors is easier to control. You don’t have to worry about the weather, animals, or large piles of waste. Everything happens in a small space where you can see and manage it daily.
It also encourages better composting habits because you are more aware of what you add to the bin. Plus, your indoor plants will love the finished compost.
Best Indoor Composting Methods for Small Spaces
There are several ways to compost indoors, and some are better for beginners than others.
Countertop Scrap Bins
Countertop compost bins are popular for a good reason. They’re compact and user-friendly, making them an easy way to collect food scraps.
Once you have enough, you can transfer them to a composting system. Also, they usually come with filtered lids that trap odors.
Some indoor compost bins, like this one, are even dishwasher-safe and made from 100% plant-based materials.
Vermicomposting
Vermicomposting, which uses worms, is another great method. Worm bins are manageable and small, making them ideal for small spaces.
This method uses red wriggler worms and beneficial microorganisms. They work together to break down organic waste in a ventilated bin.
Moreover, you can build your own worm-powered bin, or you can purchase one like the Hungry Bin. You can also use a worm bag like this one.
The finished material, called worm castings, is one of the most nutrient-rich composts available for houseplants.
Bokashi Composting
Bokashi composting is an anaerobic (oxygen-free) fermentation method that works well indoors.
Unlike traditional composting, Bokashi first ferments food waste. The fermented material is then buried in soil or added to another compost system, where it completes its decomposition.
It breaks down food fast, including cooked foods. This Japanese method also allows you to add meat, dairy, and other products.
The SCD All Seasons Organko Composting Kit is an excellent beginner-friendly composter for this method.
Choosing the right method depends on your comfort level and the amount of waste you produce.
What You Can and Cannot Compost Indoors
Fruit and vegetable scraps, coffee grounds, tea leaves and compostable tea bags, crushed eggshells, and paper towels work well. These items break down easily and do not produce strong odors when properly balanced.
However, avoid adding meat, dairy, oily foods, and heavily seasoned leftovers unless you’re using a Bokashi system. These foods tend to attract pests and smell in traditional compost bins.
Cutting scraps into smaller pieces also helps them break down faster.
Can You Compost Citrus and Onions?
You can add small amounts of citrus peels and onions to most compost systems. However, too many can slow down decomposition and harm worms in vermicomposting bins.
How to Prevent Smells in Compost
A well-maintained compost bin should smell earthy, not rotten. Smells usually mean the compost is too wet or needs more air [1].
To prevent odors, always add enough dry materials, such as shredded paper, cardboard, or coconut coir, to absorb moisture. These are often called “browns.”
Food scraps are considered “greens.” A good balance of greens and browns helps compost break down efficiently and prevents odors.
Stirring or mixing the compost occasionally also helps improve airflow, which prevents bad smells from forming.
In addition, keeping the lid closed and using a bin with a filter also makes a big difference.
How to Keep Bugs Out of Your Compost Bin
Many insects are attracted to exposed food or excess moisture. Therefore, always bury fresh scraps under a layer of dry material.
Keep fruit scraps covered and avoid leaving the bin open for long periods. In addition, make sure the compost isn’t dripping wet, since moisture attracts gnats and flies [2, 3].
Regularly cleaning the lid and edges of the bin also helps.
If fruit flies are a problem, try storing food scraps in the freezer. This keeps them until you’re ready to add them to the compost, which can help manage the issue.
How Long Indoor Compost Takes to Break Down
With DIY indoor composting, the time required depends on the composting method you choose. Indoor composting can take anywhere from a few weeks to several months.
Worm composting often produces usable worm castings in about two to three months. Bokashi composting is also quick, but the fermented material still needs to fully break down in the soil.
How to Use Indoor Compost for Houseplants
Once your compost is dark, crumbly, and smells like soil, it’s ready to use. You can mix it into potting soil to improve texture and add nutrients.
A thin layer added to the soil’s surface also acts as a gentle fertilizer.
Because indoor compost is rich, it’s best to use it sparingly. Your plants will grow stronger and more resilient over time.
Common Indoor Composting Mistakes to Avoid
Beginners often make a few simple mistakes that can cause problems.
Adding too much food waste without enough dry material is one of the most common mistakes.
Another mistake is letting the compost sit without mixing it. Compost needs some airflow to stay healthy.
Using the wrong container can also cause issues. Most indoor compost bins should allow for some airflow, but they shouldn’t be completely open. In contrast, Bokashi systems are specifically designed to remain sealed.
In addition, not everything can be composted. It is important to note that oils, dairy, and meat can quickly produce odors. They can also slow decomposition and create imbalances in the compost.
Foil and plastic wrappers never decompose and should not be added to compost.
To maintain a clean and healthy compost, focus mainly on fruit and vegetable scraps, eggshells, coffee grounds, and other compost-friendly items. This helps ensure your compost stays balanced and effective.
Finally, composting too many food scraps too soon can lead to odors. Starting slowly and maintaining a good mix of food scraps and dry materials helps avoid most composting problems.
Takeaway
Indoor composting is worth it, especially if you love houseplants or want to reduce waste. It also saves food scraps from ending up in landfills and turns them into something useful.
Moreover, it’s cleaner and easier than many people expect. Once you get the hang of it, it becomes part of your daily routine.
With the right setup, you can compost indoors without odors or bugs and enjoy the benefits year-round.
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