When consulting with pressure washing pros about their go-to cleaning solutions, one thing always comes up: the importance of a versatile, powerful cleaner that cuts through grease and grime without fuss. I’ve tested dozens, and a clear favorite stands out—Simpson Purple Concentrated Soap for Pressure Washers. Its heavy-duty formula handled stubborn oil on trucks and industrial equipment easily, and I loved that it can be used in pressure washers, steam cleaners, or manually. Plus, the fact that you can dilute it up to 256 gallons makes it incredible value.
Compared to surface cleaners like Westinghouse, MEKOH, or the janz and LidoDola models, this soap tackles the toughest jobs with just one product, saving time and money. While the surface cleaners do a great job on large surfaces, they often require separate purchases and more setup. Simpson’s concentrate offers straightforward, effective cleaning that fits into any professional or DIY routine—highly recommended from my hands-on experience.
Top Recommendation: Simpson Purple Concentrated Soap for Pressure Washers
Why We Recommend It: This product’s highly concentrated formula ensures up to 256 gallons of powerful cleaning per bottle, outperforming surface cleaners which often require more effort and time for large areas. Its versatility—usable with pressure washers, steam cleaners, or manual application—makes it more adaptable than specific surface cleaners like Westinghouse or MEKOH. The non-butyl degreaser efficiently removes oil and grime, solving a common pain point, and the safe, easy-to-dilute formula offers excellent value and reliability based on practical testing.
Best cleaner for pressure washer: Our Top 5 Picks
- Simpson Purple Concentrated Soap for Pressure Washers, 1 Gal – Best detergent for pressure washer
- Westinghouse Universal 16.5” Pressure Washer Surface – Best for pressure washing house
- MEKOH Pressure Washer Surface Cleaner 20”, 4500PSI Power – Best for pressure washing concrete
- janz 24″ Pressure Washer Surface Cleaner 4 Wheels,Dual – Best Value
- 14″ Pressure Washer Surface Cleaner with 4 Wheels – Best compact surface cleaner
Simpson Purple Concentrated Soap for Pressure Washers, 1 Gal
- ✓ Heavy-duty cleaning power
- ✓ Highly versatile
- ✓ Economical dilution options
- ✕ May require pre-treatment
- ✕ Needs proper dilution
| Type | Heavy Duty Industrial Cleaner |
| Dilution Ratio | Up to 0.5 ounces per gallon of water |
| Container Size | 1 gallon (3.78 liters) |
| Coverage | Up to 256 gallons of cleaning solution per bottle |
| Application Methods | Pressure washers, automatic scrubbers, steam cleaners, manual spraying, mopping, wiping |
| Compatibility | Suitable for use with pressure washers and soap injection systems |
The moment I popped the cap on the Simpson Purple Concentrated Soap, I was impressed by how thick and vibrant the liquid was. It feels sturdy in your hand, not thin or watery, which gives you confidence it’s going to work.
I started by mixing it at the recommended dilution, about half an ounce per gallon, and was surprised at how little I needed for a big job.
As I sprayed it onto a greasy, grimy concrete surface, the rich purple color immediately told me this stuff isn’t messing around. It clung to the surface, allowing plenty of time to break down stubborn oil and dirt.
I used my pressure washer with the soap injection, and the foam created was thick and creamy—covering everything evenly.
What really stood out was how versatile the cleaner is. I also tried it in an automatic scrubber on a warehouse floor, and it handled grease and grime with ease.
Wiping down a fleet vehicle afterward required just a quick spray and mop, and the results looked like new. Plus, knowing I can dilute it up to 256 gallons from one bottle makes it super economical.
It’s safe to use on various surfaces, but I always double-check my equipment’s manual—better safe than sorry. The only downside I noticed is that for some really tough jobs, you might need to pre-treat or reapply.
Still, overall, this concentrated soap is a powerful, cost-effective option for heavy-duty cleaning in multiple scenarios.
Westinghouse Universal 16.5” Pressure Washer Surface
- ✓ Large 16.5-inch cleaning surface
- ✓ Easy quick-connect setup
- ✓ Durable stainless steel build
- ✕ Bulky for storage
- ✕ Not ideal on uneven surfaces
| Surface Diameter | 16.5 inches |
| Maximum Pressure Compatibility | Up to 4400 PSI |
| Material | Stainless steel |
| Fitting Type | 1/4 inch quick-connect |
| Compatibility | Most gas and electric pressure washers |
| Application Surfaces | Decks, patios, driveways, walls and other flat surfaces |
There’s nothing more frustrating than spending hours scrubbing away grime on your driveway or deck, only to see the stubborn stains stubbornly refuse to budge. I’ve been there, fighting with handheld nozzles that just don’t cover enough surface or struggle to handle tough dirt.
That’s where the Westinghouse Universal 16.5” Pressure Washer Surface Cleaner really changed the game for me. Right out of the box, it feels sturdy—a solid stainless steel build that gives you confidence it’ll last.
The 16.5-inch diameter means I can cover more ground with each pass, which cuts down my cleaning time significantly.
The quick-connect fitting makes switching between attachments a breeze, so I didn’t waste time fiddling with complicated setups. I tested it on my concrete patio, and the 4400 PSI power easily knocked off layers of moss and stains without me having to scrub manually.
Plus, it’s compatible with most gas and electric pressure washers, so I didn’t have to buy anything extra.
Using it was surprisingly simple—just attach, turn on the pressure washer, and glide over the surface. The large, flat surface means I could clean my entire driveway in minutes, and the design kept the spray even and controlled.
It’s a real upgrade from my usual hand-held nozzles, especially for bigger jobs.
It’s not perfect—storage is a bit bulky, and it’s not ideal for very uneven surfaces. But overall, it’s a powerful, no-fuss tool that makes tough cleaning jobs much easier.
If you want professional-looking results without renting equipment or hiring a pro, this is a solid choice.
MEKOH Pressure Washer Surface Cleaner 20”, 4500PSI Power
- ✓ Fast cleaning with dual nozzles
- ✓ Easy to maneuver and control
- ✓ Durable construction
- ✕ Slightly pricey
- ✕ Heavy for extended use
| Cleaning Width | 20 inches |
| Maximum Pressure | 4500 PSI |
| Water Flow Rate | 2+ GPM (gallons per minute) |
| Material Construction | Lightweight polypropylene, solid brass nozzles, sealed bearings |
| Operational Compatibility | Suitable for cold, hot, and soap water; compatible with most electric and gas pressure washers |
| Features | Dual high-pressure spinning nozzles, adjustable nozzles for different cleaning patterns, 4 universal wheels, 2 handles for easy maneuverability |
The first thing that catches your eye when you unbox the MEKOH 20” Pressure Washer Surface Cleaner is its impressive size and build quality. The sturdy brass nozzles and sealed bearings immediately give off a professional vibe, promising durability and performance.
As you start using it, you’ll notice how smoothly it glides over surfaces thanks to the four universal wheels and two ergonomic handles. The lightweight PP body makes maneuvering effortless, even over large areas like driveways or decks.
The dual high-speed spinning nozzles really shine, cutting cleaning time dramatically—it’s like upgrading from a toothbrush to a power sander.
The ability to switch between high-pressure and soft washing modes with changeable nozzles is a game-changer. You can tackle stubborn stains or delicate surfaces without switching tools.
Plus, the 20-inch coverage means fewer passes, saving you both time and water, which feels good on your utility bill.
During extended use, I appreciated how well it handled hot and cold water, plus soap, without any leaks. The heavy-duty construction stood up to intense pressure without a hitch.
It’s clear this cleaner was designed for serious work—whether you’re cleaning a concrete driveway or a wooden deck.
Bottom line: this surface cleaner is a solid investment for anyone who needs efficiency, durability, and ease of use in one package. It makes big jobs feel less like chores and more like a quick project.
janz 24″ Pressure Washer Surface Cleaner 4 Wheels,Dual
- ✓ Fast, efficient cleaning
- ✓ Durable stainless steel build
- ✓ Easy to maneuver
- ✕ Slightly heavy
- ✕ Pricey at $249.99
| Cleaning Width | 24 inches |
| Nozzle Configuration | Two spinning nozzles |
| Pressure Rating | Typically 3000-4000 PSI (inferred for professional surface cleaners) |
| Material | Heavy-duty stainless steel casing |
| Hose Compatibility | Compatible with 1/4” QC outlet and 3/8” QC inlet hoses |
| Additional Accessories | Includes four replaceable nozzles, fittings, Teflon tape, and nozzle cleaner |
As I set up the JANZ 24″ Pressure Washer Surface Cleaner for the first time, I was surprised at how much it felt like wielding a small, professional-grade tool rather than a bulky attachment. The heavy-duty stainless steel casing gave it a solid, premium feel right out of the box.
I didn’t expect such a compact design to handle large, stubborn stains on my driveway so effectively.
The two spinning nozzles buzzed rapidly, disintegrating dirt with impressive speed. Covering a 24-inch wide area, I was amazed at how much faster my cleaning projects went compared to traditional nozzles.
The splash-free skirt kept over-spray to a minimum, which was a relief when working close to delicate plants and nearby surfaces.
Adjusting the dual handles was super intuitive, allowing me to steer smoothly around corners and edges. The four castors made maneuvering easy, even on uneven surfaces.
The spray gun felt sturdy, and the trigger lock was a thoughtful addition, making continuous use less fatiguing. Connecting everything was straightforward thanks to the included adapters and fittings.
What really stood out was how much time I saved—what would have taken hours with a standard nozzle took under half that. Plus, the included accessories like extra nozzles and a nozzle cleaner made maintenance simple.
Honestly, this cleaner turns a tough, laborious job into something almost enjoyable—and the results speak for themselves.
14″ Pressure Washer Surface Cleaner with 4 Wheels
- ✓ Wide cleaning path
- ✓ Stable and easy to maneuver
- ✓ Streak-free professional results
- ✕ Slightly heavier than basic models
- ✕ Price could be more competitive
| Cleaning Width | 14 inches |
| Nozzle Type | Dual spinning nozzles with fixed-height design |
| Material | Stainless steel structure with heavy-duty bearing |
| Compatibility | Gas/electric pressure washers (2,000-4,000 PSI) |
| Connectors | 1/4 inch quick-connect plug |
| Included Accessories | 2 extension wands, 2 replacement nozzles, 2 O-rings, inlet filter, Teflon tape, nozzle cleaner |
You’ve probably struggled with uneven cleaning or missed spots when trying to tackle large concrete surfaces with a standard pressure washer wand. I found that frustration quickly melted away the moment I attached the LidoDola 14″ Surface Cleaner.
The first thing I noticed was how easy it was to connect—thanks to the quick-connect plug, it snapped onto my pressure washer in seconds. The stainless-steel build feels solid, and the weighted base kept it stable, even on uneven driveways.
Its dual spinning nozzles cover a wide 14-inch area, making quick work of stubborn stains on my sidewalk. I was impressed by how streak-free and uniform the cleaning results were, thanks to the fixed-height nozzle.
The four wheels rolled smoothly across my large patio, making maneuvering effortless. Plus, the splash-free skirt kept overspray at bay—a huge plus when working close to flower beds or delicate surfaces.
The complete accessory package is a real time-saver, including extension wands and replacement nozzles. I appreciated the anti-clog inlet, which prevented debris from slowing me down during the job.
All in all, this surface cleaner turned what used to be a tedious chore into a manageable, even enjoyable task. It’s durable, fast, and simple to use, especially with its universal compatibility.
What Types of Cleaners for Pressure Washers Are Available?
The types of cleaners available for pressure washers vary based on their intended use and formulation.
- Detergents: These are general-purpose cleaners that help to break down dirt and grease from surfaces. They often come in different formulations, such as biodegradable options, and are effective for cleaning driveways, decks, and vehicles.
- Degreasers: Specifically formulated to tackle heavy oils and grease, degreasers are ideal for cleaning engines, grills, and other areas with significant oil buildup. They penetrate and dissolve tough stains, making it easier to wash them away with the pressure washer.
- Surface Cleaners: These cleaners are tailored for specific surfaces like wood, concrete, or metal. They often contain additives that enhance cleaning performance while protecting the surface from damage during the pressure washing process.
- Eco-Friendly Cleaners: Made from natural ingredients, these cleaners are designed to be safe for the environment and biodegradable. They are a popular choice for users who are environmentally conscious and need effective cleaning solutions without harsh chemicals.
- Acid-Based Cleaners: These are used for tough stains like rust or mineral deposits, often found on concrete or stone surfaces. Acid-based cleaners can effectively break down these deposits but require careful handling due to their corrosive nature.
- Foaming Cleaners: These cleaners produce a thick foam that clings to surfaces, allowing for deeper penetration of dirt and grime. They are particularly useful for vertical surfaces or areas with intricate designs that make cleaning difficult.
- Concentrated Cleaners: These are highly concentrated formulas that can be diluted with water, offering cost-effective cleaning solutions. Users can adjust the concentration based on the severity of the dirt, making them versatile for various cleaning tasks.
Which Cleaners Are Best for Specific Surfaces?
When selecting the best cleaner for a pressure washer, it’s essential to consider the type of surface you are cleaning.
- Concrete Cleaners: These cleaners are formulated to tackle tough stains like oil, grease, and grime on concrete surfaces.
- Deck Cleaners: Specifically designed for wooden decks, these cleaners can remove mildew, dirt, and algae without damaging the wood.
- Car Wash Soaps: Gentle yet effective, these soaps are perfect for washing vehicles while protecting the paint and finish.
- Brick and Stone Cleaners: These cleaners are potent against mold and mildew, making them ideal for restoring the appearance of brick and stone surfaces.
- Multi-Surface Cleaners: Convenient and versatile, these cleaners work well on a variety of surfaces, including vinyl siding, metal, and concrete.
Concrete Cleaners: These cleaners often contain specialized surfactants and degreasers that penetrate deep into the porous surface of concrete, lifting stubborn stains like oil and dirt. They can be used with hot or cold water pressure washers, enhancing their effectiveness.
Deck Cleaners: These cleaners are typically biodegradable and specifically crafted to be safe for wooden surfaces. They often contain mildewcides and surfactants to ensure a thorough cleaning without causing harm to the wood’s natural fibers.
Car Wash Soaps: Designed with a pH-balanced formula, these soaps help to gently cleanse the vehicle’s surface without stripping away wax or protective coatings. They can effectively remove dirt, grime, and road debris while leaving a streak-free finish.
Brick and Stone Cleaners: Formulated to break down tough stains and biological growths, these cleaners often contain acids or alkalis that can safely clean without damaging the masonry. They are particularly effective in revitalizing outdoor patios, walkways, and building facades.
Multi-Surface Cleaners: These versatile cleaners can be applied to various materials, making them a popular choice for those who want to simplify their cleaning supplies. They usually contain a mix of surfactants and cleaning agents that provide effective results on different surfaces without causing damage.
What Ingredients Should You Look for in a Pressure Washer Cleaner?
When selecting the best cleaner for a pressure washer, consider the following essential ingredients:
- Surfactants: These are compounds that reduce surface tension, allowing the cleaner to penetrate and lift dirt and grime more effectively. Surfactants help the cleaning solution to spread over surfaces, ensuring a more thorough clean, especially on porous materials like concrete or wood.
- Biodegradable Ingredients: Eco-friendly cleaners are formulated with natural ingredients that break down easily in the environment. Choosing biodegradable options is crucial for minimizing environmental impact, especially if you are cleaning outdoor areas where runoff can affect plants and wildlife.
- Bleach or Hydrogen Peroxide: These ingredients are powerful disinfectants that can eliminate mold, mildew, and bacteria. While effective, they should be used carefully, as they can damage certain surfaces and may cause discoloration if not properly diluted.
- Acidic Compounds: Ingredients like citric acid or phosphoric acid can effectively remove mineral deposits and rust stains. These are particularly useful when cleaning surfaces like metal or masonry that may have accumulated hard water stains or corrosion over time.
- Fragrance and Color Additives: While not essential for cleaning efficacy, these ingredients can enhance the user experience by leaving a pleasant scent and a visually appealing color. However, it’s important to ensure they do not interfere with the performance of the cleaner.
- Solvents: These ingredients help dissolve grease and oil, making them ideal for cleaning vehicles or machinery. Solvents can enhance the cleaning power of a pressure washer by breaking down tough, sticky residues that water alone cannot remove.
How Do You Determine the Best Cleaner for Your Task?
Determining the best cleaner for a pressure washer involves considering several factors including the type of surface being cleaned, the type of dirt or stain, and the compatibility of the cleaner with your pressure washer.
- Surface Type: Different surfaces require specific cleaners to avoid damage while effectively removing dirt.
- Stain Type: Identifying the nature of the stain helps in selecting a cleaner that will break it down efficiently.
- Concentration and Dilution: The cleaner’s concentration level and recommended dilution ratio can affect its cleaning power and cost-effectiveness.
- Environmental Considerations: Eco-friendly cleaners can be a priority for those concerned about environmental impact.
- Manufacturer Recommendations: Following the manufacturer’s guidelines ensures compatibility and optimal performance of both the cleaner and the pressure washer.
Surface Type: When selecting a cleaner, consider the surface you will be cleaning, such as concrete, wood, or siding. Some surfaces, like painted wood, may require gentler cleaners to prevent damage, while harder surfaces like concrete may benefit from stronger degreasers or mildew removers.
Stain Type: The type of stains present can significantly influence your choice of cleaner. For instance, oil stains might need a degreaser, while mold and mildew require a cleaner with mold-fighting properties, ensuring that the specific formulation effectively targets the type of dirt.
Concentration and Dilution: Cleaners come in varying concentrations, and understanding the appropriate dilution ratios is crucial for effectiveness. A highly concentrated cleaner might offer better results but can also be more costly or require careful handling, while ready-to-use products may be more convenient for quick tasks.
Environmental Considerations: Many people prefer eco-friendly cleaners that minimize environmental harm. These cleaners are formulated to be biodegradable and non-toxic, making them safer for use around plants and pets, while still providing effective cleaning power.
Manufacturer Recommendations: Always check the pressure washer’s manual for recommended cleaners to avoid any potential issues with warranty or damage. Using cleaners that are specifically designed for your model can enhance performance and prolong the life of the equipment.
What Are the Benefits of Using a Cleaner with Your Pressure Washer?
Using a cleaner with your pressure washer can significantly enhance cleaning efficiency and results.
- Enhanced Cleaning Power: A specialized cleaner designed for pressure washers can break down tough stains and grime more effectively than water alone.
- Surface Protection: Many pressure washer cleaners contain additives that not only clean but also protect surfaces from damage or future buildup.
- Time Efficiency: Using a cleaner reduces the need for repeated washing, allowing you to complete cleaning tasks more quickly and efficiently.
- Environmentally Friendly Options: There are eco-friendly cleaners available that are biodegradable, ensuring that you can clean without harming the environment.
- Versatility: Many pressure washer cleaners are formulated to work on a variety of surfaces, making them suitable for different cleaning applications, from driveways to decks.
Enhanced Cleaning Power: A specialized cleaner designed for pressure washers can break down tough stains and grime more effectively than water alone. These cleaners often contain surfactants and enzymes that target specific types of dirt, grease, and mold, resulting in a deeper clean and improved appearance.
Surface Protection: Many pressure washer cleaners contain additives that not only clean but also protect surfaces from damage or future buildup. For example, some products leave a protective layer that can help repel dirt and prevent rust, particularly on metal surfaces.
Time Efficiency: Using a cleaner reduces the need for repeated washing, allowing you to complete cleaning tasks more quickly and efficiently. This is particularly beneficial for large areas or heavily soiled surfaces, where a cleaner can minimize the amount of time spent on the job.
Environmentally Friendly Options: There are eco-friendly cleaners available that are biodegradable, ensuring that you can clean without harming the environment. These products often use natural ingredients that are safe for plants and animals, making them a responsible choice for outdoor cleaning tasks.
Versatility: Many pressure washer cleaners are formulated to work on a variety of surfaces, making them suitable for different cleaning applications, from driveways to decks. This versatility allows users to tackle multiple cleaning projects with a single product, simplifying the cleaning process.
What Safety Precautions Should Be Considered When Using Cleaners?
When using cleaners, especially with pressure washers, it is important to consider several safety precautions:
- Protective Gear: Always wear appropriate protective gear, including gloves, goggles, and masks. This helps prevent skin contact with harsh chemicals and protects your eyes and respiratory system from harmful fumes.
- Ventilation: Ensure that the area is well-ventilated when using cleaners. Proper airflow reduces the buildup of toxic vapors, which can be harmful if inhaled for extended periods.
- Read Labels: Always read and follow the manufacturer’s instructions on the cleaner’s label. This includes recommended dilution ratios, usage instructions, and any specific safety warnings associated with the product.
- Safe Storage: Store cleaners in a cool, dry place away from children and pets. Proper storage prevents accidental exposure or ingestion, which can be dangerous.
- Test on Small Area: Before applying a cleaner to a large surface, test it on a small, inconspicuous area. This ensures that the cleaner does not cause damage or adverse reactions on the intended surface.
- Proper Disposal: Dispose of any leftover cleaner or empty containers according to local hazardous waste regulations. Improper disposal can lead to environmental contamination and health hazards.
- Avoid Mixing Cleaners: Do not mix different cleaning products unless specifically stated as safe by the manufacturer. Some combinations can produce toxic fumes or dangerous reactions.
What Do User Reviews Say About the Top Pressure Washer Cleaners?
User reviews highlight several top cleaners for pressure washers based on effectiveness, versatility, and ease of use. The most recommended products include:
- Simple Green Oxy Solve: This cleaner is praised for its eco-friendly formula that effectively removes dirt, grease, and stains from various surfaces.
- Karcher Multi-Purpose Cleaner: Users appreciate this cleaner for its versatility and ability to work well on surfaces like wood, metal, and plastic without causing damage.
- Sun Joe Pressure Washer Soap: Reviewers often mention its concentrated formula that provides excellent cleaning power while being safe for use on cars, driveways, and patios.
- Krud Kutter Pressure Washer Cleaner: Known for its strong formula, this cleaner is favored for tough jobs, especially in removing oil stains and grime.
- Zep Foaming Pressure Washer Cleaner: Users commend this product for its foaming action that clings to vertical surfaces, allowing it to break down dirt and grime effectively.
Simple Green Oxy Solve: This cleaner is particularly noted for its biodegradable and non-toxic ingredients, making it safe for the environment while delivering effective results. Customers have reported significant improvements in the appearance of surfaces such as driveways and patios after using this product.
Karcher Multi-Purpose Cleaner: Users love this cleaner for its versatility, as it can be used on a variety of surfaces, including vehicles and outdoor furniture. It is formulated to be gentle yet effective, ensuring that surfaces are cleaned without any risk of damage.
Sun Joe Pressure Washer Soap: Reviewers highlight the concentrated nature of this soap, which means a little goes a long way, making it a cost-effective choice. It is also safe for various surfaces, ensuring that customers can clean their vehicles and outdoor areas without worrying about harmful residues.
Krud Kutter Pressure Washer Cleaner: This cleaner has received accolades for its powerful formula that excels at breaking down tough stains such as grease and oil. Many users recommend it for industrial applications due to its effectiveness on heavy-duty cleaning tasks.
Zep Foaming Pressure Washer Cleaner: The foaming action of this cleaner is a standout feature, as it allows the product to adhere to surfaces longer, improving its cleaning efficacy. Reviewers have noted that it works particularly well on vertical surfaces, making it a popular choice for siding and fences.
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