How to Get Rid of Compost Smell for Good
A rotten or sour smell from your compost, indoors or out, means it has gone airless, too wet with food scraps and short on dry material and oxygen, so it ferments instead of breaking down cleanly. Add dry browns, turn it, and cut the wet inputs, and the smell clears.
We make small-batch beeswax candles in Far Rockaway, so a room that truly smells clean is our whole focus, and that always starts at the source rather than the scent. Below is where the smell comes from, how to clear it step by step, and how to keep the space fresh afterward, with the full the MBur beeswax candle collection here as you read.
Why compost turns sour
Healthy compost is aerobic, meaning it needs air. Pile in too many wet greens like food scraps without dry browns and without turning, and it runs out of oxygen and starts to stink.
As the EPA's home composting guide puts it, a bad odor usually means the pile is too wet or needs more air, so the fix is to add browns and turn it.
How to fix the smell, step by step
- Add browns. Mix in dry material like shredded paper, cardboard, or dry leaves to balance the wet scraps and soak up excess moisture.
- Turn it. Aerate the pile or bin with a fork, or tumble it, to get oxygen back into the mix.
- Cut the wrong inputs. Keep meat, dairy, and oily food out of a home bin, since the EPA notes these create odor and draw pests.
- Check the moisture. It should feel like a wrung-out sponge, damp but not soggy. Add browns if it is too wet.
- Tend the kitchen caddy. Empty it every couple of days, rinse it, and use a lid with a charcoal filter.
Balance and air do the work. Roughly even greens and browns, turned now and then, is what keeps compost breaking down without a smell.
Keep it from coming back
Keep a stash of browns next to the bin so you can add some every time you add food scraps.
Turn the pile regularly and empty the indoor caddy often, before scraps have time to ferment.
Freshen the whole room once the source is gone
With the fermenting scraps handled, the air itself is the last step. A clean candle is the finishing touch here, best lit once the space is already clean. From there it is the fastest way to make the room read fresh rather than merely neutral.
For your kitchen, Slice of Life fits well. It is green and garden-fresh, with tomato leaf, basil, and lemon peel, and like every MBur candle it is poured from 100% beeswax with a wooden wick and phthalate-free non-toxic fragrance oils, so freshening the air never means adding soot on top.
Frequently asked questions
Why does my compost smell rotten?
It is too wet and airless, so scraps ferment. Add dry browns and turn it to restore airflow, and the smell clears.
What should I not put in a home compost bin?
Meat, fish, dairy, and oily food, which the EPA notes cause odor and attract pests. Stick to fruit and vegetable scraps, coffee grounds, and yard trimmings.
How often should I turn compost?
Every week or two for a backyard pile. More frequent turning speeds things up and keeps odors down.
How do I keep a kitchen caddy from smelling?
Empty it every couple of days, rinse it, and use a lid with a charcoal filter. Freezing scraps until you take them out also helps.
Ready to keep your space smelling clean once the source is handled? Explore the MBur beeswax candle collection and find the scent that fits the room.
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