Best Cleaners to Use With a Pressure Washer for Any Job
Choosing the right cleaner for a pressure washer can dramatically improve results, protect surfaces, and reduce cleaning time. This guide highlights five top products that pair well with various washer setups, from peroxide-powered outdoor cleaners to durable surface cleaners that speed up large-area jobs. You’ll find practical tips on dilution, surface compatibility, and how to pick cleaners and attachments that fit your equipment and tasks. The selections emphasize safe, effective formulas that work across materials like wood, vinyl, brick, concrete, and metal.
| Product | Brand | Type | Key Benefit |
|---|---|---|---|
| Simple Green Oxy Solve Outdoor Cleaner | Simple Green | Outdoor cleaner | Peroxide-powered, multi-surface cleaning |
| SIMPSON 88282 Heavy Duty Cleaner | SIMPSON | Concentrated soap | Industrial-strength degreasing and dilution versatility |
| Oxy Solve House And Siding Cleaner | Simple Green | Siding cleaner | Removes algae, moss, mildew on vinyl, wood, brick |
| Westinghouse PWSC12 Surface Cleaner Attachment | Westinghouse | Surface cleaner attachment | 12″ width, up to 2500 PSI, less overspray |
| JANZ 14-Inch Surface Cleaner | JANZ | Surface cleaner | 4 wheels, 4000 PSI, fast, even cleaning |
Simple Green Oxy Solve Outdoor Cleaner

This versatile cleaner targets a broad range of outdoor surfaces, including wood, composite, vinyl, metal, fabric, plastic, wicker, concrete, stone, brick, and asphalt. Its peroxide-powered formula lifts dirt, grime, and stains from mold, mildew, moss, and algae without requiring harsh chemical treatments. The product is designed to be used with pressure washers, enabling efficient cleaning of large areas and tricky stains with relatively simple dilution steps.
For practical use, the formula supports a straightforward dilution approach suitable for home or light commercial workloads. Homeowners can pair the concentrate with standard pressure washers to tackle decks, siding, fences, and walkways while avoiding aggressive, corrosive cleaners. The result is a balanced option that provides effective cleaning without compromising surface integrity or indoor air quality during application.
SIMPSON 88282 Heavy Duty Cleaner

This heavy-duty cleaner is formulated for industrial sites, commercial equipment, construction machinery, fleet vehicles, and more. It’s a non-butyl degreaser that quickly cuts through tough oil and grease, reducing the need to carry multiple cleaning products. The concentrated formula is designed for use with pressure washers and spray bottles, and it can also be deployed in automatic scrubbers or steam cleaners for broader cleaning tasks.
In terms of versatility, SIMPSON’s cleaner adapts to various application methods. It can be sprayed, mopped, or wiped, and it works with pressure washers or manual applications. Its concentrated nature yields substantial cleaning solution when diluted, making it economical for larger projects while maintaining strong degreasing performance on equipment, vehicles, and hard surfaces such as concrete and metal.
Oxy Solve House And Siding Cleaner

This cleaner is designed for siding and exterior surfaces, including vinyl, aluminum, stucco, wood, and brick. It targets stains from algae, moss, and mildew, lifting discoloration with the peroxide-powered cleaning action. The formula emphasizes safer outdoor use without harsh chemical residues, making it a practical option for routine house exterior maintenance and seasonal cleanups.
Compatibility with pressure washers is a key advantage. The concentrate can be diluted to fit varying levels of soiling, and it delivers reliable results on common exterior substrates. Homeowners looking for a balanced, surface-friendly solution will find this product suits routine maintenance as well as annual deep cleaning tasks for home exteriors.
Westinghouse 12-Inch Surface Cleaner

Upgrade your cleaning efficiency with a 12″ surface cleaner designed for flat surfaces like decks and patios. This attachment handles up to 2500 PSI, enabling faster, more uniform cleaning with reduced overspray. Its 1/4” quick-connect fitting ensures easy compatibility with many gas and electric pressure washers, making it a practical addition for homeowners and small enhancement projects alike.
The design prioritizes ease of use and user safety. The wide cleaning path helps cover more area in less time, while the straightforward setup reduces fatigue during long sessions. For broad, flat surfaces that benefit from consistent patterns and minimal streaks, this attachment provides a reliable option.
JANZ 14-Inch Surface Cleaner

The JANZ surface cleaner offers professional-grade cleaning across a wide 14″ swath. Its dual spinning nozzles dramatically speed up cleaning compared to a spray wand, helping remove stubborn stains on driveways, patios, decks, and sidewalks. The stainless-steel housing and heavy-duty bearing support durability under high pressure, while four universal wheels improve mobility and stability during operation.
Key features include high-pressure compatibility up to 4000 PSI, a splash-free skirt to reduce overspray, and a robust, long-lasting build. This model is well-suited for owners who frequently tackle large outdoor surfaces and want a cleaner that delivers fast, even results with less effort and time compared to standard spray wands.
Buying Guide
Choosing the right cleaner and attachments depends on your washer’s power, the surfaces you clean, and how you work. Consider these factors to optimize results and protect surfaces over time.
- Surface compatibility: Wood, vinyl, brick, concrete, and metal each respond to cleaners differently. Peroxide-based formulas work well on organic staining (mildew, mold) but test on delicate surfaces first. For large flat areas, surface cleaners can significantly reduce cleaning time and improve uniformity.
- Concentration and yield: Concentrates save money, but you must follow the manufacturer’s dilution chart. Higher PSI units may require stronger formulas or shorter dwell times to avoid surface damage.
- Safety and environment: Choose biodegradable, non-bleach formulas when possible. Wear eye protection and gloves, and avoid mixing cleaners with chlorine bleach or ammonia. Ventilate confined spaces when using cleaning agents near doors or windows.
- PSI range and compatibility: Ensure the cleaner’s recommended PSI matches your pressure washer. Surface cleaners are often rated up to a PSI threshold; exceeding that can cause wear or reduced cleaning efficiency.
- Attachment compatibility: Quick-connect fittings, 1/4″ connectors, and the width of surface cleaners influence how you set up and maneuver your system. Wider cleaners cover more area but require steady movement and adequate water supply.
- Cost efficiency: Check the yield per bottle and dilution rates to assess cost per cleaning session. Surface cleaners can slash labor time on large projects, offsetting higher upfront costs.
- Application method: For stubborn stains, pre-wetting and using a sweeping motion helps prevent streaks. For heavy soils, start with a higher flow rate and shorter passes to avoid saturating the surface.
When selecting cleaners, balance surface needs, washer power, and practical usage. Combining a versatile cleaner like an outdoor peroxide formula with a dependable surface cleaner attachment often yields the best overall results for homes and small businesses. Regular maintenance and short, efficient cleaning sessions help extend the life of your equipment while keeping exterior spaces looking fresh and clean.