Outdoor surfaces like siding, driveways, and patios often harbor mold, mildew, algae, and dirt. The following pressure washer cleaners are formulated to lift and remove these stains effectively while protectingYour equipment. This guide highlights five top options, detailing usage, surfaces, and benefits to help you choose the right cleaner for mold and mildew removal.
Product Quick Overview
| Product | Brand | Key Surfaces | Highlights |
|---|---|---|---|
| Oxy Solve Total Outdoor Pressure Washer Cleaner – 1 Gal | Simple Green | Wood, vinyl, brick, concrete, metal, fabric, plastic, etc. | Peroxide-action cleaning on mold and mildew; broad surface compatibility |
| Oxy Solve House and Siding Pressure Washer Cleaner – 1 Gal | Simple Green | Vinyl, aluminum, wood, brick, stucco | Lifts algae and mildew stains with peroxide power |
| Mold Armor E-Z House Wash – 1 Gal | Mold Armor | Siding, brick, concrete, trim | Kills mold and mildew quickly; versatile for many exterior surfaces |
| 30 SECONDS Pressure Washer Concentrated Cleaner – 2 Pack | 30 SECONDS | Vinyl, metal, wood, concrete, stone, brick | Anti-corrosive; powerful stain removal; makes up to 20 gallons per pack |
| Simple Green Oxy Solve Concrete And Driveway – 1 Gal | Simple Green | Driveways, walkways, patios, masonry | Eliminates tough oil stains and mildew; peroxide-based |
Simple Green Oxy Solve Total Outdoor Cleaner

Product overview: This formula uses peroxide chemistry to lift dirt, grime, and stains from a wide range of surfaces, including mold, mildew, moss, and algae. It is designed to clean outdoor materials without relying on harsh chemicals, protecting plants and surrounding landscaping while delivering strong cleaning power on tough stains.
Simple Green Oxy Solve House And Siding Cleaner

Product overview: This concentrate is designed for exterior siding, including vinyl, aluminum, wood, and brick. It targets stains from algae, moss, and mildew and uses peroxide-based action to lift grime, reducing the need for harsh scrubbing or multiple products in a single cleaning session.
Mold Armor E-Z House Wash

Product overview: Mold Armor E-Z House Wash focuses on killing mold and mildew on exterior surfaces such as vinyl siding, brick, stucco, concrete, and trim. It can be used as a refill for hose-end products, offering a straightforward solution for quick, on-site mold cleanup on a variety of materials.
30 SECONDS Pressure Washer Cleaner

Product overview: A fast-acting, bleach-based cleaner designed for pressure washers. It penetrates mold, mildew, algae, and other stains to revive outdoor surfaces. It is formulated to be anti-corrosive and safe for a range of surfaces, including vinyl, metal, wood, and concrete, when diluted properly.
Simple Green Oxy Solve Concrete and Driveway Cleaner

Product overview: Specially formulated for driveways and walkways, this cleaner targets oil stains, rust, grease, and mildew. The peroxide-based formula lifts grime without resorting to harsh chemicals, making it suitable for masonry and concrete surfaces common in outdoors spaces.
Buying Guide: Key Purchase Considerations
- Surface compatibility: Choose a cleaner that targets the surfaces you clean most (vinyl siding, concrete, brick, wood, metal, or masonry).
- Active cleaning chemistry: Peroxide-based formulas are effective for mold and mildew, but consider dilution flexibility and safety for plants, grass, and pets.
- Concentration and yield: Higher concentration cleaners save money but require accurate dilution. Look for products that offer clear usage guidelines and expected yields (gallons per bottle).
- Indoor vs outdoor usage: Ensure the product is designed for exterior use and won’t degrade paint, trim, or protective coatings when used as directed.
- Ease of use: Concentrates versus ready-to-use sprays affect preparation time. Hose-end or spray-on options may simplify application for large areas.
- Environmental impact: Prefer formulations labeled as plant- and pet-safe when used near lawns or gardens, and avoid overly harsh chemical ingredients when avoiding runoff.
- Equipment compatibility: Anti-corrosive formulas and milder cleaners help protect pressure washer seals and hoses over repeated use.
- Stain reach and residuals: Some products lift deep-set stains more effectively but may require multiple applications or rinses for complete removal.
- Cost per use: Compare bottle size and cleaning yield to estimate overall value, especially when treating large areas like driveways or siding.
- User safety: Follow label directions, wear gloves and eye protection, and test a small area first to avoid discoloration or damage to sensitive surfaces.