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CoverClean HC Microbial Cleaner for Oils & Diesel


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Location : Interior/Exterior
Task : Oil/Diesel Spills Stains
Application : Pump up Sprayer
Surface : Heavy oil contaminated concrete
Base : Microbial Based
Drytime : 1-4 hrs.
Coverage : 150-250 sq. ft./gal.
Finish : N/A

CoverClean HC Microbial Cleaner Solution

A PH Neutral, Eco-Friendly Concrete Floor Cleaner For Petroleum-Based Oil Stains

CoverClean HC is an industrial-strength bacterial solution that uses micro-organisms to digest and clean oil, grease and diesel from concrete, masonry and metal surfaces.

It has been specially developed to remove hydrocarbons from oil-contaminated concrete prior to epoxy coating or the use of adhesives.  It is environmentally safe and harmless to humans, pets, plants and aquatic life.

Table of Contents

What Is A Microbial Cleaner For Oil & Diesel Stains?

A Microbial Cleaner is a solution that contains bacteria or microbes developed specifically for breaking down and consuming oil.

There are different types of microbes. Some work better with food-based oil and grease. Others work with petroleum-based things like motor oil, cutting oil and brake fluid.

They’re used generally to get oil out of concrete surfaces. They don’t just thin out the oil, they actually consume the oil and leave no residue.

They are used as a method of cleaning concrete, so that you can come back later and coat them, put a floor surface on concrete, or they’re used to eliminate odor.

For example:

There’s been an oil spill in a basement.
You want to remove that oily smell that resulted from the spill.
Using a microbial cleaner designed for eliminating or removing oil from concrete chemically, you will remove the cause of the odor.


After using CoverClean HC

What Is CoverClean HC Cleaner?

Coverclean HC is a microbial cleaner that uses microbes to break down petroleum-based stains or hydrocarbons.

The “HC” in the product’s name stands for: hydrocarbons. And the microbes used in it literally break down – consume and remove – the hydrocarbons from concrete and other porous surfaces.

Typical degreasers from a big-box stores or a DIY brands just thin out the oil on the floor surface. They contain solvents which thin out the oil and spread it over a larger area, allowing you to wash it away.

The LIVE microbes Coverclean HC consume the oil, leaving behind very little to no residue. It’s a much more effective (and eco-friendly, envrionmentally safe) way of removing the oil from within the pores of the concrete. IF any residue is left in the water – or in the solution after applying it to the concrete – is much less concentrated.

Essentially, the contaminants have been consumed as opposed to spread out across your floor. This is a very effective way of cleaning industrial floors.

Areas such as:

  • Factories that generate a lot of oil through manufacturing.
  • Workshops
  • Gas stations (inside and outside).

This product is also useful in consumer situations like a residential driveway or garage where you may get oil stains. At the very least, CoverClean HC is much more effective in removing oil-based stains and spills than a typical citrus-based or a high alkaline-based degreasers.

How Do Microbial Cleaners Work?

Microbial cleaners work by breaking down the oil. The microbes actually consume hydrogen and carbon, and convert them into water and carbon dioxide. These “leftovers” are easily rinsed off or washed away.

When applying CoverClean HC, we use water to dampen in the surface first. This helps the microbes get into the porous surface and begin naturally feeding off any oil that is present.

This process is very effective in deep cleaning oil contaminated surfaces.

This is the same oil you will find on the floors in:

  • A factory
  • A workshop
  • A gas station exterior, around the pumps
  • On your driveway
  • On your garage floor.

What Are The Benefits Of Using Microbial Cleaners?

The major benefit of using microbial cleaner products – like CoverClean HC – is that they don’t leave a residue.

Again, the product actually consumes the oil, as opposed to just thinning it out and spreading it across your concrete surface.

If you use a typical degreaser, all it will do is apply a solvent which thins out the oil and spread it over a larger area.  It’s a neat trick, but it does not eliminate the oil.

CoverClean HC eats the oil, actually removing it from the surface.  The result is no residue.  This means you could top coat that surface, or apply another flooring surface over the concrete – without the coating lifting or peeling.

Another benefit to using a professional grade microbial cleaner is that it’s also environmentally friendly. There’s nothing hazardous in there. There are no V.O.C.s or solvents to worry about. Due to the fact that there is nothing hazardous in the product, it’s very safe to use. It won’t harm anyone or anything living (like fish, pets or kids).

CoverClean HC is particularly effective at eliminating oily odors very quickly. This is due primarily to its’ ability to work deep into the concrete pores – after dampening the surface – to eat all of the oil present in the floor. This also prevents any possibility of oil bleeding back to the surface.

The Best Way To Apply CoverClean HC Microbial Cleaner

Since CoverClean HC uses naturally occurring microbes to break down the oil (hydrocarbons), it’s important not to use anything caustic when applying the product.

Use room temperature water to wet the surface, and apply the CoverClean HC. (Freezing or hot water will destroy the microbes.)

You can mop it on the floor, or use a pump up sprayer to apply it to the surface. Then give it some time to react with the surface.  We recommend scrubbing it in with a brush. Just to work it into the surface, and then allow it to soak into the concrete.

If it starts to dry out, then apply some more cleaner, or mist it with some additional water. You can do this with a hose or pump up sprayer.  Don’t forget that water is the transportation vehicle for CoverClean HC to get those living microbes deep into the concrete pores.

The longer you leave the product on the surface, the more effective it will be. If you can leave it overnight, you’ll get even a better result. You should see results after three (3) hours.

If the surface has heavy contamination, we recommend soaking the floor, letting the product work overnight and rinsing it off in the morning.

Don’t mix the product with any other types of cleaners. That can destroy the living microbes.

Why Do Microbial Cleaners Have A Shelf Life?

Microbial cleaners have a shelf life because essentially they’re living organisms.  Typically, the microbes live for 12 months – if they’re stored in a cool environment.

If the surrounding temperature gets over 120 degrees, they could die.  On the other hand, you don’t want to store them in freezing conditions either.

We recommend storing your CoverClean HC in a place where there are no extremes in temps.  In those conditions, the product will be effective for about 12 months. However, after this time has elapsed, the microbes tend to deteriorate.

They break down and are not as active as they would be inside of that 12 month shelf-life period.

Things to Consider When Selecting A Microbial Cleaner


  • Eliminates heavy oil and grease contaminants
  • Digests oil and grease rather than dispersing them
  • Leaves no residue eliminating coating adhesion problems
  • Non hazardous
  • Cleans all surfaces
  • Meets USDA requirements
  • Cleans of pores concrete
  • Fast acting
  • Non flammable
  • No VOC’s
  • Cleans without polluting

Typical Uses

  • Heavy oil contaminated concrete
  • Chemical removal residue
  • Cleaning asphalt paving
  • Metal, concrete and masonry
  • Walls and floors
  • Machine shop floors
  • Parking lots and driveways
  • Engines and machinery
  • Paving stones and masonry
  • Petroleum tanks and pits

Shelf Life

12 months when stored at 77°F (25°C) or less in a dry and shaded area. Protect from freezing.


USDA compliant for use in food preparation areas.

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Frequently Asked Questions

How to repair or recoat GlazeGuard?

GlazeGuard is a tough clear sealer and very hard wearing. It tends to keep its shine for a long time but it can still be scratched. Especially if you drag sharp objects, like heavy kitchen appliances or point loads like table legs or chair legs.

To spot repair or recoat entire area it is not necessary to strip the sealer, you just need to sand or scrub the surface clean so it can be top coated. Sand with 120 grit sand paper or scrub with black pad and GlossGlean neutral cleaner. Clean off the dust or residue and apply a top coat. For more detailed instructions see GlazeGuard Maintenance instructions

Cleaning GlazeGuard?

GlazeGuard when fully cured has a hard surface so dirt does not easily stick to it. You don’t need to use aggressive cleaners. An part of maintaining your floor is to use dust mop or “swiffer” type microfiber mop to keep sand and dirt off the floor. After that to wash the floor you can use neutral clean or mild liquid detergents, light vinegar solutions, or light ammonia solutions.

Stay away from solvents like Paint strippers, Acetone and Xylene. If you do have use concentrated cleaners/degreasers. Clean up residue right away. In general make sure all standard floor cleaners are diluted in accordance with manufactures instructions. For more information see GlazeGuard Maintenance instructions.

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