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Biological Oil Stain Remover - Concrete, Blockwork & Hard Surfaces

2019 sees the launch of a new & improved formulation for our best-selling biological oil stain remover! 

OT8  is a powerful, environmentally friendly, non-toxic biological oil cleaner & degreaser that removes stains caused by hydrocarbon liquids including oil, diesel & power steering fluid.  Suitable for use wherever oil pollution is a problem and ideal for use in:


  • Refineries

  • Oil Storage areas

  • Forecourts

  • Garages


For further information on our new formulation and why we made these changes, please click or tap here.


Our new formulation

As a manufacturer we are committed to continually reviewing our product range to ensure we always offer our customers the best solutions possible – both from a usability and technological aspect as well as from an environmentally responsible perspective.

Our new OT8 formulation offers the same great benefits you have come to expect, such as being:

  • Not flammable
  • Non-bio accumulative
  • Not toxic
  • Not a marine pollutant
  • Not corrosive
  • 1L cleans 1m2

  However, on top of this, our new OT8 now offers the following advantages:


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10x more powerful performance: *
Using new solvents, OT8 is now able to break down and emulsify the oil stain much quicker, allowing our blend of bacteria to get to work on ‘eating’ the oil stain faster than ever before!


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Thicker, viscous texture:
Our thicker formula allows OT8 to stay on the treated area for longer, reducing the potential for the product to run off or dry out before it can work – especially useful for hard to access areas, or sloping ground etc.

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Bacteria remain in suspension:
In previous versions of OT8, over time the friendly bacteria would separate and drop to the bottom of the container, requiring vigorous shaking the container to re-animate them – this is no longer required, as in our new formulation the friendly bacteria remain in suspension!

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Changing REACH & CLP legislation:
Recent updates to EU REACH legislation have led to a new CLP (Classification, Labelling & Packaging) change for one of the ingredients in our previous formulation. This change would have seen our old formulation requiring increased user hazard statements. Our new 2019 OT8 formulation has minimal CLP labelling - safe for the user & the environment!

    * Compared to our previous OT8 formula sold in 2018.


Seeing is believing:

Our new OT8 has been extensively tested, both internally and independently to ensure it performs under tough, real life conditions.

In one customer trial, we compared our previous OT8 formula against our new formulation in a like-for-like oil contamination setting on steel plate flooring.  See the difference for yourself:OT8 BA 1  OT8 BA 2

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Why choose OT8?

Effective & powerful

  • One of the most effective products on the market and used by many companies and satisfied customers for over twenty years: 100% product satisfaction guaranteed.

Quick and easy

  • Ready to use formula with no mixing or preparation needed - just shake, pour on, brush in, leave for 20 minutes then rinse with water. It's that simple!

Biological solution

  • Naturally digests oil contamination into harmless CO2 and water, and breaks down in the environment - leaving no soil residue and with no hazard to grass and plants.

Environmentally friendly

  • Non-toxic, VOC free and with no potential for bioaccumulation - readily biodegradable with a >56% BOD/COD ratio after 20 days.

Safe to use

  • Low hazard profile and non-flammable: our new OT8 formulation has minimal CLP labelling, is safe for the user and the environment! 
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How does OT8 work?

Our biological oil stain removing products, including OT8, contain specially selected bacteria which naturally digest oil stains.

While the food source − i.e. the oil stain − is present, the bacteria keep on working and continue to do so until it’s all gone!

For the biological cleaning of oil stains to be effective, our bacteria require:

  1. A food source to digest, i.e. the oil stain
  2. Warm conditions
  3. Moist conditions
  4. Oxygen

When these conditions are in place, the bacteria selected for use in our products will digest oil stains - from light oils to heavy crude.

The bacteria used in our products are Euro Type 1, classified as "safe for long term laboratory application and safe for long term general public exposure".

Please note: speed of oil digestion is temperature dependent. 

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Where to use

Rapidly removes and digests oil stains from surfaces such as:

  • Block work
  • Paving stones
  • Concrete
  • Forecourts
  • Garage floors
  • Driveways and equipment.

 OT8 is not suitable for use on hydraulic fluid, synthetic oils and wood oils.

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How to use

OT8 is simple to use and lifts oil stains from most porous surfaces.

  • Shake container before use
  • Water wet the oil stain before applying OT8.
  • Brush into the stain using a soft brush until OT8 changes colour from off-white to brown.
  • Leave for 20 minutes and water rinse.
  • Approximately 1 Litre of OT8 treats 1m2

If using OT8 Kit:

  • After rinsing, apply WYK Absorbent Powder to absorb free oil and prevent spills reaching surface drains.
  • Sweep up and dispose of according to local regulations. Rinse clean.


OT8 is a biological solution that uses harmless bacteria to remove oil stains from porous surfaces.

  • For best results or for when using on larger stains, cover the treated area with polythene sheeting − ideally making a tent − and keep in place for up to a week. Ensure the area remains damp, but not flooded. Doing this provides a warm and damp environment, giving the bacteria used in OT8 the best conditions to grow and digest the oil into carbon dioxide and water.
  • On old, weathered and ingrained oil stains, the oil stain may “re-appear”. This is because the bacteria in OT8 keep working after application to bring the ingrained oil stain to the surface. Some types of concrete are more easily treated than others and for optimum stain removal it may be necessary for OT8 to be applied more than once, over an extended period of time.
  • OT8 is not suitable for oil stains on Tarmac − please use Bio TA.
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Before and after

  •  Oil storage area, Scotland:


  • Customer's blockwork driveway, UK:


  • Customer's blockwork driveway, UK:


  • Runway at Hong Kong Airport:


  • Carpark at Hong Kong Airport:


  • Drain cover in Antwerp:


  • Wall at Grangemouth Refinery:


  •  Railway line, Eire:



Customer emails

I have just used OT8 on an 8 month diesel spill and usual collection of engine oil stains on my block paved drive and am absolutely amazed at the results. After an hour's light labour (two small applications) all the stains are virtually gone and peace and harmony is once again restored to the household.

Reading feedback on various sites prior to the purchase of OT8 I am of the opinion that most if not all other products would not have given such outstanding results for such a small amount of work … I would have no hesitation in recommending it without reservation.

Thank you for one of the very few products available today that actually “does what it says on the tin”

Alan Farnaby, UK

I have just used your OT8 oil cleaning kit on my old oil stain in my drive.  There is only two words for it -  ABSOLUTELY AMAZING!!

Barrie Knapp, UK

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UK Environmental Agency Report

Report on oil digesting bacteria used in OT8

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Technical data

  • Appearance
Cream to light tan viscous liquid
  • Bacterial count
2.0 x 10⁷ cfu/ml
  • BOD/COD (20 days)
  • VOC Content
  • Specific Gravity
  • Flash point
  • pH at 20oC
approx. 4.0
  • Shelf life
Two years after manufacture
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Pack Sizes


  • 1000L IBCs

  • 200L drums

  • 20L containers

  • 4 x 5L containers

  • 12 x 1L containers

Kits (including absorbent spill powder)

  • 5 metre2 kit
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OT8 2018 1L web2OT8 2018 web


OT8 2018 5L+WYK web


Please note: 

  • OT8 is not suitable for use on hydraulic fluid, wood, synthetic or mineral oils and is not suitable for use on tarmac & asphalt surfaces.
  • For oil stains on tarmac and asphalt surfaces, we recommend using Bio TA.

Disclaimer: Whilst every effort has been made to ensure the information presented above was correct at time of publication, Oil Technics Ltd. does not assume any liability to any party for any errors or omissions. The above information is supplied for guidance only and is without guarantee. Any opinions expressed in this document are not necessarily those of Oil Technics Ltd. and are not for onward publication without consent.  Pictures are given for representation purposes only.
Product details
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