GraveClean vs D2: Which Is Better for Headstone Cleaning?

For a sound headstone with stubborn black spotting or mixed biological staining, we recommend GraveClean’s purpose-formulated two-stage range. Our dedicated Black Spot Remover treats the difficult staining first; our pH-neutral Clean & Protect formula then provides the cleaning and aftercare stage. D2 is a biological cleaner for a broader range of architectural surfaces, including headstones. The practical reason to choose GraveClean is the separate formulation for each job, backed by our memorial-care experience.

That difference matters. A neglected memorial often needs more than a general clean. It needs a product that can deal with stubborn biological growth properly, then clean the wider surface without relying on harsh methods or excessive scrubbing. That is where GraveClean has the advantage.

In this guide, we compare GraveClean and D2 side by side, explain where D2 still has a place, and show why GraveClean is the stronger fit for most headstones that need a more thorough and controlled clean.

 

Quick answer

Choose D2 if:

• the staining is mostly general biological growth

• you are happy to follow a method with contact time, brushing and rinsing

Choose GraveClean if:

• black spotting or lichen is clearly visible

• the memorial has mixed staining

• the stone has not been cleaned in years

• you want a more controlled two-stage process

 

At a glance

Feature	D2	GraveClean
Main positioning	Broad biological cleaner for masonry and natural stone	Memorial-specific cleaning workflow
Best fit	General biological staining and air pollutant staining	Black spotting, lichen, moss, mixed staining
Method	Apply undiluted, allow contact time, soft brush, rinse, or use a slower no-scrub/no-rinse route	Treat stubborn biological staining first, then clean and protect the wider stone
One-visit suitability	Can work well, but results may continue developing over days or longer	Dedicated treatment and aftercare stages; timing depends on the bottle instructions and staining
Strongest use case	General monument or masonry cleaning	Neglected headstones with visible black or green staining

Start with the stone, not the product

Before comparing cleaners, check the memorial itself. If the stone is flaking, powdering, cracked, loose, or unstable, do not push ahead with a DIY clean. The National Park Service guidance on cleaning grave markers advises using the gentlest means possible and warns that even careful cleaning can accelerate deterioration. It also says to use soft brushes and gentle cleaners only, and never wire brushes, power washers, or harsh cleaners such as bleach.

That matters because people often blame the product when the real issue is stone condition, overworking the surface, or trying to force fast results on a fragile memorial. GraveClean covers the same point in its own guide on how to clean a gravestone safely and when to stop, which is worth reading before any DIY clean.

What are you actually trying to remove?

Most headstones have one or more of these:

• Surface grime: weather film, dirt, bird mess, general dulling

• Green growth: algae and moss

• Black spotting and lichen: usually the most stubborn category

Dark marks need careful assessment: some are biological growth, while other discolouration can have a different cause. When black spotting and lichen are the problem, a dedicated treatment makes it easier to choose a product for that specific stage of the job.

This is exactly where GraveClean separates the job. Its Black Spot Remover for Headstones is positioned as a first-stage treatment for black algae, lichen, moss and long-term organic build-up, rather than expecting a general cleaner to handle everything in one pass.

What D2 is designed to do

D2 is intended for monuments and headstones as well as other architectural surfaces. Its manufacturer’s instructions list biological and air-pollution staining, including algae and lichens. That makes it a relevant alternative; the choice here is between that treatment and GraveClean’s dedicated black spot and Clean & Protect stages.

D2’s manufacturer specifies undiluted application and a minimum 15-minute contact time for its immediate-result method, followed by the stated brushing and rinsing steps. It also offers a no-scrub, no-rinse method, with results developing from a week to several months depending on staining. Check the current label before use and allow the chosen method time to work.

Those instructions matter when planning a visit. A biological treatment may continue working after you leave, so the immediate appearance alone is not a complete measure of its final result.

Where D2 tends to fall short on headstones

The issue is not that D2 is poor. The issue is that many cemetery cleans are not simple.

A neglected memorial often has:

• black spotting or lichen in the surface

• green growth around edges and lettering

• general weathering film across the face of the stone

For this combination of staining, our recommendation is to separate the jobs: target the stubborn biological deposits, then use the cleaning and aftercare formula. Do not respond to remaining marks by scrubbing harder or repeating treatments sooner than directed. Conservation guidance on grave-marker cleaning advises gentle treatment and protecting the original surface.

Where GraveClean differs

GraveClean’s advantage for this kind of job is its purpose-formulated range. As explained in our product-development story, we developed our own headstone-cleaning formula through field testing and made it available for families maintaining memorials between professional visits. The range gives you a dedicated black spot treatment and a separate pH-neutral cleaner, rather than asking one bottle to cover both roles.

The Black Spot Remover for Headstones is described as being specially formulated to tackle black algae, lichen, moss and organic growth that has built up over years. The product page positions it as a restorative first step before using a finishing cleaner for longer-term care.

The Headstone Cleaner Stone Cleaning Solution is described as a pH-neutral headstone cleaner designed specifically for natural stone. GraveClean says it is biodegradable, solvent-free, contains no bleach or harsh chemicals, and leaves behind a protective layer to slow future staining.

The Headstone Cleaning Bundle combines both stages and is aimed at visible black or green staining and memorials that have not been cleaned in five years or more.

For customers who want the two products together, the bundle is the straightforward option. The pH-neutral, bleach-free description applies to Clean & Protect; do not assume it describes every formulation in the range. Follow each bottle’s own instructions.

Which should you choose?

Use this as the practical chooser.

Choose D2 if:

• the staining is mostly general biological growth
  

• you are comfortable following the application method properly

• you are happy with results that may continue developing after the visit

Choose GraveClean if:

• black spotting or lichen is visible

• the memorial has mixed staining rather than one simple issue

• the stone has not been cleaned in years

• you want a staged process designed around headstone care rather than a broad masonry clean

If the second list sounds closer to the stone in front of you, the safest starting point is usually the Black Spot Remover, followed by the Headstone Cleaner Stone Cleaning Solution, or simply using the Headstone Cleaning Bundle if you want the two-step process in one kit.

Safe method on the day

Whichever product you use, keep the method conservative:

• check whether the chosen treatment requires pre-wetting

• follow the stated dilution and contact time

• use soft brushes only

• follow the application and rinsing method on the chosen bottle

• rinse when the product instructions require it

• stop if the stone starts shedding material or feels unstable

These checks help you use the chosen product appropriately. For help assessing the memorial before starting, read how to clean a gravestone safely and when to stop.

Bottom line

For a sound memorial needing both stubborn stain treatment and ongoing cleaning, we recommend GraveClean’s two-stage system. Its dedicated Black Spot Remover and separate Clean & Protect formulation give each part of the job its own product. Choose the Headstone Cleaning Bundle for both stages, or Black Spot Remover when you specifically need the first-stage treatment. Check suitability and follow the bottle instructions for the memorial in front of you.