Tent & Awning Deals:
Unmissable Offers on Tents & Awnings
Have you discovered our blog yet?
Get inspired for your next adventure
Summer Offers:
Secure hot Deals!

  Camping Specialist Since 1958
  Free shipping from 50 €
Blog   Service
EN | DE
Language:
DeutschDeutsch
EnglishEnglish
NederlandsNederlands
ÖsterreichÖsterreich
FrançaisFrançais
ItalianoItaliano
EspañolEspañol
Shipping Country:
BelgiumBelgium
BulgariaBulgaria
DenmarkDenmark
GermanyGermany
EstoniaEstonia
FinlandFinland
FranceFrance
IrelandIreland
ItalyItaly
CroatiaCroatia
LatviaLatvia
LithuaniaLithuania
LuxembourgLuxembourg
NetherlandsNetherlands
AustriaAustria
PolandPoland
PortugalPortugal
RomaniaRomania
SwedenSweden
SwitzerlandSwitzerland
SlovakiaSlovakia
SloveniaSlovenia
SpainSpain
Czech RepublicCzech Republic
HungaryHungary
Tents Tents
All products in "Tents"
Outdoor & Leisure Outdoor & Leisure
All products in "Outdoor & Leisure"
Furniture Furniture
All products in "Furniture"
Household Household
All products in "Household"
Gas Gas
All products in "Gas"
Water & Sanitation Water & Sanitation
All products in "Water & Sanitation"
Electronics Electronics
All products in "Electronics"
Caravanning Caravanning
All products in "Caravanning"
Multimedia Multimedia
All products in "Multimedia"
Heating & Cooling Heating & Cooling
All products in "Heating & Cooling"
Clothing Clothing
All products in "Clothing"
Spare Parts Spare Parts
All products in "Spare Parts"
Brands Brands
All products in "Brands"
Trending Topics Trending Topics
All products in "Trending Topics"
New New
All products in "New"
Sale Sale
All products in "Sale"
Store Store
Change store
Address

To the store page
Blog Blog
All products in "Blog"
Language & Country
Language
Shipping country

Grey Water Tank Additive (1L) Berger Eco Clean

RRP 12,99 €
10,99
10,99 € / l
Prices incl. statutory VAT, plus shipping
Get up to 5% Bonus with the Berger Loyalty Card
€ Bonus with the Berger Loyalty Card
We reward your loyalty
Every time you make a purchase with your Berger loyalty card, the value of your purchases (calculated selling price of items purchased after deduction of any discounts granted, excluding shipping costs) is credited to your loyalty card bonus account.
Get now your Loyalty Card!
 
Availability: Delivered within 3-5 working days
 Added

Article characteristics

Product details

Green from inside and outside Removes odours and keeps tank and pipes clean
Microbiological Biodegradable harmless to humans, animals and the environment
Bottle made from recycled materials Without aggressive chemicals

Product description

ECO CLEAN liquids are free of aggressive chemicals and instead use natural micro-organisms. These decompose the pollution and release odorless substances such as water and air.

Microbiological waste water tank additive for caravans, motor homes and boats. Highly effective concentrate with natural microorganisms, free of chlorine or aggressive chemicals. Used regularly, it eliminates unpleasant odors from drains, keeps tank and pipes clean, prevents dirt and grease deposits and ensures trouble-free emptying of the tank. Particularly gentle on materials, it contributes to the longevity of graywater tanks and pipelines.

Application:
Shake well before use, add 20 ml ECO CLEAN wastewater additive per 20 liters of tank capacity directly into the sink and shower drains. For optimum results, divide the dosing quantity between the drains. Re-dose as needed.

Features

Colour green
Filling quantity 1,0 l
Design Concentrate
ean 4036231073496

Legal information

General Safety Information

  • Do not get in eyes, on skin or clothing.
  • Do not inhale and keep away from children

Manufacturer information

Fritz Berger GmbH

Dr. Matthias Herfeld

Fritz-Berger-Strasse 1

92318 Neumarkt

Germany

customer-service@berger-camping.com

Product tests (2)

4.55 / 5
2 Test reports
4.60 / 5
Susanne P.
Test report from 26.06.2025
Entire test report
Seit wann nutzt du Berger Eco Clean Grauwassertankzusatz?
„We have been using the add-on for about 2 weeks.“
Bei welchen Außentemperaturen fand der Test statt?
„During our vacation, it was between 30 and 33 degrees throughout.“
Hand holding white plastic bottle with green and white label against a background of trees and vehicle
Hand holding a bottle of cleaning foam above a sink
Very good
Wie war der erste Eindruck der Sanitärflüssigkeit?
„The gray water tank additive is conveniently filled and the bottle is attractively designed.“
Very good
Wie beurteilst du den Geruch des Produktes?
„The additive smells pleasant and not chemical. As the product is poured into the caravan sink and then rinsed off, you only smell it when you pour it in.“
Average
Wie leicht lässt sich das Konzentrat dosieren?
„As you only need a small amount of concentrate for one use, dosing is not so easy at first. Unfortunately, the dosage markings on the bottle do not go up to the level of the liquid. Once the bottle is a little emptier, however, it is very easy.“
Very good
Wie gut wurden die Gerüche im Abwassertank während des Tests absorbiert?
„During our test, the water in the waste water tank was odorless and it foamed significantly less than without the additive.“
Very good
Wie lange hat der Inhalt der Flasche gehalten?
„The contents of the bottle last a long time as large quantities are not required.“
Würdest du das Berger Eco Clean Grauwassertankzusatz nach dem Test weiter nutzen?
„We will continue to use the gray water tank additive, as we have not had any problems with unpleasant odors from the wastewater pipes in the past.“
Dein Gesamteindruck vom Berger Eco Clean Grauwassertankzusatz
„The additive is conveniently bottled and the bottle is attractively designed. The smell is pleasant. We had no problems with unpleasant odors - even at high outside temperatures.“
Overall impression:
„The additive is conveniently bottled and the bottle is attractively designed. The smell is pleasant. We had no problems with unpleasant odors - even at high outside temperatures.“
4.50 / 5
Florian D.
Test report from 19.06.2025
Entire test report
Seit wann nutzt du Berger Eco Clean Grauwassertankzusatz?
„This year at Whitsun for the first time.“
Bei welchen Außentemperaturen fand der Test statt?
„At the beginning of the vacation it was about 15° and towards the end about 30°“
Hand holding a bottle of cleaning product
Hand holding bottle above sink
Water is being poured from a bottle into a sink
Good
Wie war der erste Eindruck der Sanitärflüssigkeit?
„As we usually had a waste water hose for gray water and were using the gray water tank this time, we were very curious. So we had a good first impression.“
Good
Wie beurteilst du den Geruch des Produktes?
„Pleasant to almost neutral.“
Very good
Wie leicht lässt sich das Konzentrat dosieren?
„It is easy to dose by following the instructions for use.“
Very good
Wie gut wurden die Gerüche im Abwassertank während des Tests absorbiert?
„Very good. No more bad odors to smell.“
Very good
Wie lange hat der Inhalt der Flasche gehalten?
„Since the gray water tank had to be emptied daily, the bottle was easily enough for a 10-day vacation.“
Good
Würdest du das Berger Eco Clean Grauwassertankzusatz nach dem Test weiter nutzen?
„In any case. Were very satisfied.“
Dein Gesamteindruck vom Berger Eco Clean Grauwassertankzusatz
„Very functional, neutralizes odours perfectly and super product.“
Overall impression:
„Very functional, neutralizes odours perfectly and super product.“

Reviews (18) Verified valuation

4.83 / 5
18 Reviews
Verified ratings
5
83 %
4
17 %
3
0 %
2
0 %
1
0 %
Sort:
Frank G. 22.05.2026
Yes, I recommend this product
No reasons were given for this rating.
Yes, I recommend this product
No reasons were given for this rating.
Quality
Functionality
Thank you for your feedback
Sven W. 16.05.2026
Yes, I recommend this product
"Everything as it should be" "Alles wie es sein soll"
show more
Yes, I recommend this product
"Everything as it should be" "Alles wie es sein soll"
Quality
Functionality
Rating was automatically translated by DeepL. Display original text Display translation
Thank you for your feedback
Eberhard M. 14.05.2026
Yes, I recommend this product
No reasons were given for this rating.
Yes, I recommend this product
No reasons were given for this rating.
Thank you for your feedback
Rainer B. 12.05.2026
Yes, I recommend this product
No reasons were given for this rating.
Yes, I recommend this product
No reasons were given for this rating.
Quality
Functionality
Thank you for your feedback
Stefanie E. 10.05.2026
Yes, I recommend this product
No reasons were given for this rating.
Yes, I recommend this product
No reasons were given for this rating.
Functionality
Thank you for your feedback

Article characteristics

Sanitary additive for the grey water tank

Prevents grey water odours from the drain and removes deposits and contamination.

Similar items

More from this brand

Your session will run in
10 : 00
Min. Sec.
Our website uses cookies
We use cookies to check the performance of our online store, to analyze and optimize your user experience and to show you relevant content on both our and third-party sites. For this to work, we need data on the use of the pages and end devices. By clicking on "Allow all", you consent to the storage of cookies on your device to improve website navigation, analyse website usage and personalize advertisements.information on cookies and your right to object
Our website uses cookies
We use cookies to check the performance of our online store, to analyze and optimize your user experience and to show you relevant content on both our and third-party sites. For this to work, we need data on the use of the pages and end devices. By clicking on "Allow all", you consent to the storage of cookies on your device to improve website navigation, analyse website usage and personalize advertisements.information on cookies and your right to object
Manage consent preferences
These cookies are necessary for the website to function and cannot be deactivated in your systems. As a rule, these cookies are only set in response to actions you take that correspond to a service request, such as setting your privacy preferences, logging in or filling out forms. You can set your browser to block these cookies or to notify you about these cookies. However, some areas of the website will then not work. These cookies do not store any personal data.
Preference cookies enable a website to remember information that changes the way the website behaves or looks, such as your preferred language or the region you are in.
Statistics cookies help website owners understand how visitors interact with websites by collecting and reporting information anonymously.
These cookies may be set through our website by our advertising partners. They may be used by these companies to build a profile of your interests and show you relevant ads on other websites. They do not directly store personal data, but are based on the unique identification of your browser and internet device. If you do not allow these cookies, you will experience less targeted advertising.