Problem: Septic tank odour
Causes, risks and the biological solution for your septic tank.
Why does your septic tank smell?
Odours occur when anaerobic putrefaction bacteria break down organic matter and release hydrogen sulphide (H₂S). This happens when the bacterial balance is disrupted — after using cleaning products, antibiotics, or extended inactivity.
Biological causes (treatable)
- ● Too few beneficial bacteria
- ● Bacterial die-off from cleaning products
- ● System dormant after vacation
- ● Excessive organic load
Mechanical causes (professional needed)
- ● Faulty aeration blower
- ● Blocked pipes
- ● Overflowing tank
- ● Broken membrane / filter
CleanWaste restores the balance
CleanWaste contains highly concentrated naturally occurring bacterial strains that displace putrefaction bacteria and efficiently break down organic matter. No chemicals, no excavation — simply pour into the toilet.
Frequently Asked Questions
Solution for your septic tank
Starter
Starter Bottle
Ideal for first-time treatment or acute odour shock
- 1L biological concentrate bottle
- Measuring cup
- Quick-start guide
€30
⭐ Most Popular
Most Popular
Family Bottle
3-month biological balance maintenance for families
- 3L biological concentrate bottle
- Measuring cup
- Monthly dosing calendar
€70
Best Value
Annual Bottle
Full-year proactive wastewater system care
- 5L biological concentrate bottle
- Measuring cup
- Annual dosing schedule
- System health checklist
- Priority email support
€100