Protect outdoor surfaces and restore curb appeal with purpose-built pressure washer cleaners. The following selections cover a range of surfaces—from wood and vinyl siding to concrete and metal—while balancing cleaning power, dilution needs, and safety. This guide summarizes five top-rated options, highlighting what they clean best and how to use them effectively with standard pressure washers.
| Product | Brand | Key Feature |
|---|---|---|
| Simple Green Oxy Solve Total Outdoor Pressure Washer Cleaner • 1 Gal | Simple Green Store | Lifts dirt from wood, vinyl, brick; uses peroxide to lift grime without harsh chemicals |
| Oxy Solve House and Siding Pressure Washer Cleaner • 1 Gal | Simple Green Store | Removes stains on vinyl, aluminum, wood, brick; targets algae, moss, mildew with peroxide |
| Simpson Cleaning 88282 Cleaner • 1 Gallon | SIMPSON Store | Heavy-duty degreasing for industrial sites; versatile for spray or manual use |
| ZEP INC 128 OZ House/Siding Wash | Zep Store | Covers up to 5,000 sq ft; concentrated formula up to 20 gallons |
| Elemonator: House Wash Surfactant • 64 oz | PressureTek Store | Bleach-compatible foaming surfactant for siding, roof, and concrete |
Note: Each product is selected for compatibility with common pressure washers and a variety of outdoor surfaces. Always follow label directions for dilution, application, and safety. Use appropriate PPE and test a small area before wide-scale cleaning.
Simple Green Oxy Solve Total Outdoor Cleaner

Simple Green Oxy Solve Total Outdoor Cleaner is formulated to tackle a broad range of exterior surfaces. It lifts dirt and stains from wood, composite, vinyl, metal, fabric, plastic, wicker, concrete, stone, brick, and asphalt. The cleaner uses peroxide to power out grime without relying on harsh chemicals, making it suitable for many homeowners seeking a balance between effectiveness and safety.
Key features include multi-surface compatibility and stain lifting from mold, mildew, moss, and algae. It’s designed to work with standard pressure washers, offering a straightforward dilution process and broad cleaning capabilities for outdoor projects such as decks, fences, siding, and pathways.
Oxy Solve House and Siding Cleaner

This concentrate targets exterior siding and common building materials, including vinyl, aluminum, stucco, wood, and brick. It excels at removing stains and discoloration caused by algae, moss, and mildew. The formula leverages peroxide to lift grime without harsh chemicals, making it suitable for homeowners who want effective cleaning while preserving surface integrity on homes and buildings.
SIMPSON Cleaning 88282 Cleaner

Simpson’s heavy-duty cleaner is designed for industrial-scale cleaning. It quickly cuts through tough oil and grease and reduces the need for multiple products. Suitable for use in pressure washers, automatic scrubbers, steam cleaners, or manual applications, it provides high concentration options and can be diluted to extend supply. This versatility makes it a practical choice for fleets, facilities, and large-scale cleaning tasks.
ZEP House/Siding Wash

ZE P’s House/Siding Wash offers broad surface coverage, with a concentrate that yields up to 20 gallons. It’s designed to handle exterior walls, walkways, and related surfaces, delivering effective stain removal and mildew control while keeping application simple and scalable for larger homes or properties with extensive siding.
Elemonator: House Wash Surfactant

Elemonator is a dedicated surfactant designed to pair with bleach solutions for soft wash cleaning of siding, roofs, and concrete. Available in 64-ounce and larger containers, it improves foaming and rinsing performance, helping lift dirt and grime with less water runoff. The product emphasizes compatibility with bleach and stable performance in varied weather conditions, making it a good partner for gentle yet thorough exterior cleaning.
Buying Guide: Key Purchase Considerations
When selecting a cleaning chemical for pressure washing, consider the following factors to match your project needs:
- Surface compatibility: Ensure the formula is suitable for your surfaces (vinyl, wood, brick, concrete, metal, roof, or siding).
- Concentration vs. ready-to-use: Concentrates offer cost savings and flexibility but require accurate dilution; ready-to-use formulas are simpler for casual use.
- Bleach compatibility: Some cleaners are designed to work with bleach; others avoid it. Bleach can boost stain removal on mold and mildew but may affect certain materials and finishes.
- Stain removal strengths: Heavy-duty degreasers target oil, grease, and industrial soils; peroxide-based formulas lift organic grime like moss or mildew on exterior surfaces.
- Dilution guidelines: Follow label directions for water-to-product ratios to avoid surface damage and ensure optimal cleaning power.
- Environmental and safety considerations: Look for biodegradable formulations and low-vapor options. Use PPE and protect surrounding plants and nearby surfaces.
- Application method: Some products are best diluted for use with automatic sprayers, spray bottles, or direct application with a brush, depending on the surface and dirt level.
- Cost efficiency: Compare the cleaning area covered per bottle or per gallon when evaluating concentrates vs. ready-to-use solutions.
- Storage and shelf life: Check container stability and storage requirements, especially for bleach-compatible formulations.