What holds up, what doesn't.
Eco enzyme is a mildly acidic fermented liquid. Some of what people say it does is chemistry you can measure. Some of it is enthusiasm. This page tries to keep the two apart.
What it actually is, chemically
The liquid that comes out of a finished jar is mostly water, with a pH usually between 3.0 and 4.0. The acidity comes from organic acids — acetic, lactic and citric — produced by yeasts and lactic-acid bacteria as they metabolise the sugar and the sugars naturally present in the fruit scraps.
It also contains a small amount of ethanol, dissolved carbon dioxide, and a mixture of hydrolytic enzymes — mainly amylase, protease and lipase — produced by the microbes as they ferment the fruit. That enzyme activity is real and has been measured in the lab (Rahman et al., 2021), but the levels are low and vary widely from jar to jar because home fermentation is never standardised (Arun & Sivashanmugam, 2017) — far from the purified enzyme concentrations used in commercial enzymatic cleaners.
Why it cleans at all
The cleaning effect is not mysterious. Acidity in the 3–4 pH range dissolves soap scum and mineral deposits, cuts grease when combined with the small amount of surfactant activity from residual plant compounds, and creates an environment where many household bacteria do not survive well.
This is the same reason white vinegar cleans. Eco enzyme is, roughly, vinegar with extra microbial diversity and a citrus smell. It is not stronger than vinegar. It is not weaker either. It is a fermented acidic liquid, and it behaves like one.
The enzymes in the liquid do play a part — mostly in breaking down organic residues like fats, starches and proteins, which is why eco enzyme performs reasonably well on wastewater (see the claim ledger below). But for everyday household surface cleaning, the acidity does most of the work. So the name 'eco enzyme' isn't entirely wrong — it just emphasises the component that isn't the main act in surface cleaning.
The claim ledger
Every claim you'll read about eco enzyme, sorted by how well it holds up. We update this when the evidence changes.
| Claim | Status | Note |
|---|---|---|
| Cleans household surfaces | plausible | Consistent with the chemistry of a mildly acidic liquid. Comparable to dilute vinegar on floors, counters and glass. |
| Contains genuinely active enzymes (protease, amylase, lipase), not just the name | limited evidence | Yes — several lab studies detect real enzyme activity in eco enzyme. Rahman et al. (2021) measured amylase, protease and lipase activity in eco enzyme made from fruit and vegetable waste; Singh et al. (2025) tie wastewater pollutant breakdown directly to these three enzymes. But the levels sit far below purified commercial enzymes, and vary widely between batches because fermentation parameters are not standardised (Arun & Sivashanmugam, 2017). |
| Freshens drains and reduces odour | plausible | Plausible on the same grounds as any acidic, microbially active rinse. Effect is temporary; a weekly cup, not a miracle. |
| Diverts kitchen scraps from landfill | plausible | True as a matter of arithmetic — scraps you ferment are scraps you don't bin. Modest per household, meaningful at scale. |
| Acts as a mild plant fertiliser at 1:1000 | limited evidence | A study of eco enzyme made from vegetable waste, fruit waste and a mix of both found N-P-K content below liquid organic fertiliser standards, yet plant growth still improved beyond what conventional NPK measures capture — with vegetable waste (not fruit) performing best (Rosariastuti et al., 2023). Not a substitute for a full fertiliser. |
| Improves greywater and pond water | limited evidence | Small-scale studies show real reductions: a 10% eco enzyme dose cut BOD by 65.4% and COD by 48.7% in 5 days on domestic wastewater (Kerkar & Salvi, 2020); a 20% dose cut BOD by 80.6%, COD by 62.9%, TSS by 74.3% and TDS by 43.9% in 20 days on drain water (Singh et al., 2025). Real, modest, and not equivalent to a treatment plant — both studies are lab/local scale and not widely replicated. |
| Kills common surface bacteria | limited evidence | Laboratory studies against E. coli, S. aureus and similar show inhibition at low pH, and part of that activity is attributed to lipase and amylase in the liquid (Lubis et al., 2025; Rahman et al., 2021). A systematic review of 24 studies also concluded eco enzyme is viable as a household-scale surface disinfectant (Vidalia et al., 2023). Not a replacement for a hospital-grade disinfectant. |
| Deters aphids and mealybugs sprayed on leaves | limited evidence | Widely reported by home gardeners. Plausible from the acidity; not tested to the standard of a commercial pesticide. |
| Treats human illness, taken internally | unsupported | No credible evidence. Do not drink it, do not put it in a wound, do not use it in place of medicine. |
| Purifies air when sprayed indoors | unsupported | No mechanism, no evidence. Spraying an acidic liquid does not clean air; at best it masks smell briefly. |
| Repairs the ozone layer when made at scale | false | A popular but scientifically false claim, sometimes attributed to early promoters. The chemistry does not work that way at any scale. |
Safety — what not to do
- ✕Do not drink it. It is not a health tonic. Home ferments are not sterile.
- ✕Do not apply it to broken skin, eyes, or mucous membranes.
- ✕Do not use it on natural stone (marble, travertine). The acidity etches the surface.
- ✕Do not mix it with bleach or ammonia-based cleaners. Acid plus bleach releases chlorine gas.
- ✕Do not use a glass jar with a fully sealed lid. Use plastic with room to expand, or a glass jar with a loose lid.
- ✕Do not give it to pets or livestock as a supplement. Ask a vet if you want to use it around animals.
References
These are the sources behind the claims on this page. We add them once we've read and verified them — not before.
- [1]Pasalari, H., Moosavi, A., Kermani, M., Sharifi, R., & Farzadkia, M. (2024). A systematic review on garbage enzymes and their applications in environmental processes. Ecotoxicology and Environmental Safety.https://doi.org/10.1016/j.ecoenv.2024.116369
- [2]Rahman, S., Haque, I., Goswami, R. C. D., Barooah, P., Sood, K., & Choudhury, B. (2021). Characterization and FPLC analysis of garbage enzyme: Biocatalytic and antimicrobial activity. Waste and Biomass Valorization, 12(1), 293–302.https://doi.org/10.1007/s12649-020-00956-z
- [3]Arun, C., & Sivashanmugam, P. (2017). Study on optimization of process parameters for enhancing the multi-hydrolytic enzyme activity in garbage enzyme produced from preconsumer organic waste. Bioresource Technology, 200–210.https://doi.org/10.1016/j.biortech.2016.12.029
- [4]Lubis, N., Damayanti, R., & Wardani, S. (2025). Antimicrobial activity of eco-enzymes with various dilutions as a natural disinfectant. Jurnal Penelitian Pendidikan IPA, 11(5).https://doi.org/10.29303/jppipa.v11i5.11052
- [5]Vidalia, C., Angelina, E., Hans, J., Field, L. H., Santo, N. C., & Rukmini, E. (2023). Eco-enzyme as disinfectant: A systematic literature review. International Journal of Public Health Science, 12(3), 1171–1180.https://doi.org/10.11591/ijphs.v12i3.22131
- [6]Kerkar, S. S., & Salvi, S. S. (2020). Application of eco-enzyme for domestic waste water treatment. International Journal for Research in Engineering Application & Management.https://doi.org/10.35291/2454-9150.2020.0075
- [7]Singh, A. N., Ray, M. R., Mishra, U., Jethwa, K. B., Yadav, N., Shankhwar, N., Chauhan, G. S., & Meshram, K. (2025). Assessment of garbage enzyme as a bioremediation method for the wastewater treatment. Biotechnology and Applied Biochemistry, 72(4), 1045–1055.https://doi.org/10.1002/bab.2720
- [8]Rosariastuti, R., Fadlilla, T., & Budiastuti, M. (2023). Potential of fruit and vegetable waste as eco-enzyme fertilizer for plants. Jurnal Penelitian Pendidikan IPA, 9(4).https://doi.org/10.29303/jppipa.v9i4.3010
Last reviewed: 2026-09-03