Black Phenyl for Drains: Stop Bad Smells at the Source
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Black phenyl for drains targets the biofilm of organic residue and anaerobic bacteria that accumulates inside drain traps and pipes — the primary source of persistent drain odour in Indian bathrooms and kitchens.
Why Drain Odour Persists
Standard floor mopping does not treat the drain interior. The P-trap or S-trap below every bathroom drain holds standing water that blocks sewer gases — but when coated with organic biofilm, anaerobic bacteria in that biofilm produce hydrogen sulfide (rotten egg smell) continuously. For a complete guide on bathroom odour causes, see our toilet smell guide and floor smell guide.
The Correct Drain Treatment Method
- Pour 30–50ml Super Strong Phenyl concentrate directly into the drain — undiluted. No water yet.
- Leave for 10–15 minutes. Do not run water during dwell time.
- Flush with a full bucket of water.
- Repeat 2–3× per week until odour is eliminated. Monthly maintenance thereafter.
Kitchen vs Bathroom Drain
| Drain Type | Contamination | Treatment Frequency |
|---|---|---|
| Bathroom floor drain | Soap, hair, body oils | 2–3× weekly until clear, monthly after |
| Kitchen drain | Food oil, food particles | Weekly |
| Toilet drain | Fecal bacteria | Daily (pour into toilet bowl) |
Frequently Asked Questions
Will black phenyl damage PVC pipes?
At standard use concentration (30–50ml in 5–10 litres of water flush), Super Strong Phenyl is safe for PVC and ceramic drain pipes.
Does Asepsis deliver across India?
Yes — all 34 states. Free delivery above ₹500. 2–3 days. 10,000+ customers.
• Why Does Your Toilet Smell Bad?
• Why Does My Floor Still Smell After Cleaning?
• How to Clean Bathroom Wall Tiles
• How to Clean Black Grout Lines
🛒 Eliminate Drain Smell — Super Strong Phenyl ₹120
250ml makes 2L. Free delivery above ₹500. All 34 states.
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