10 Best Exterior House Cleaners 2026 in the United States

The 30 Seconds Outdoor Cleaner is a practical solution for anyone facing issues with stains caused by algae, mold, mildew, and moss on various exterior surfaces. Its cleaning power is reliable, quickly tackling organic growth stains on wood decks, concrete sidewalks, asphalt driveways, brick walls, vinyl siding, and more. The cleaner is versatile and effective across a wide range of surfaces, making it a go-to for comprehensive outdoor cleaning needs.

Its application method is user-friendly, involving a simple spray on and hose off process, eliminating the need for strenuous pressure washing. Additionally, it comes with a hose end spray attachment for convenience. In terms of coverage, it handles up to 900 square feet per bottle, which is decent for medium-sized areas. One of its notable strengths is that it is safe for lawns and plants when used as directed, so you don't need to worry about harming your garden.

Users should follow the dilution instructions carefully to ensure effective cleaning and safety. The product comes in a pack of three 64 Fl Oz bottles, making it a cost-effective option for multiple uses. It is a bestseller in its category and is made in the USA, available since 2018, and has a solid reputation for delivering what it promises.

The Wet & Forget Outdoor Moss, Mold, Mildew, & Algae Stain Remover is a versatile cleaner designed to tackle stubborn outdoor stains. One of its strengths is the powerful new and improved nozzle that can spray up to 30 feet, making it easier to reach high surfaces like roofs and siding. The nozzle also offers a fan tip for quicker application on flat surfaces like driveways and decks. This product does not require rinsing and works over time with natural elements like wind and rain to clean surfaces, making it fairly low maintenance.

For green stains, you can expect results within 1-2 weeks, but more stubborn black stains can take several months to clear, with long-established stains potentially taking up to a year. This might be a drawback for those seeking immediate results. The cleaner is bleach-free and non-acidic, which is safer for surfaces and the environment, though users are advised to keep it away from water bodies and to protect plants by flushing them with water before and after application.

The product’s coverage is substantial, treating up to 2,000 square feet per bottle, but heavily stained or porous surfaces will absorb more product, potentially requiring more frequent applications. Each bottle has an unlimited shelf life, ensuring you can keep it for future use without worrying about it expiring. In terms of ease of use, it attaches directly to a garden hose, simplifying the application process. The gradual cleaning process and specific application conditions (cool, dry surfaces, and no rain forecast) might be seen as inconvenient by some users. This product is ideal for those who prefer a long-term, low-effort maintenance solution for outdoor cleaning.

The Oxy Solve House and Siding Pressure Washer Cleaner is a versatile exterior cleaner well-suited for various surfaces like vinyl, aluminum, wood, brick, and stucco. Its main strength lies in its cleaning power, efficiently removing stains and discoloration caused by algae, moss, and mildew using the power of peroxide. This makes it a strong candidate for homeowners looking for an effective solution to maintain their house exteriors.

It is designed to be used with a pressure washer and the concentrated formula can clean up to 6,400 sq. ft., which offers good coverage for larger areas. The product's environmentally friendly and non-toxic composition is another advantage, as it ensures safety for users and minimal environmental impact.

The need for a pressure washer might be a limitation if you don't already own one. Additionally, some users may find the 9.27-pound weight of the gallon jug a bit cumbersome to handle. This cleaner is ideal for those who have a pressure washer and are looking for an effective, safe, and eco-friendly cleaning solution for various exterior surfaces.