MAX Defender™ cleans stains caused by mold, mildew, algae, and fungus from many outdoor surfaces.

MAX Defender™ was designed to work over time with the elements, such as rain, wind, and sun. The best part? NO POWER WASHING required! After the initial application, MAX Defender™ can be used for preventative maintenance. The combination of MAX Defender™ and natural weather conditions will break down stains leaving a cleaner surface.

Max Defender Wheel

No Rinsing

Reduces water use and eliminates the need to pressure clean.

No Scrubbing

Simply apply water and let our proprietary ingredients clean the surface.


Designed to work with Mother Nature.


No harsh chemicals to compromise the integrity of the surface.

MAX Defender™ reduces the appearance of exterior stains caused by mold, mildew, fungus, and algae. MAX Defender™ works on decks, patios, sidewalks, wood, awnings, railings, docks, outdoor furniture, driveways, and more. MAX Defender™ has allowed us to save homeowners from costly repairs. Thanks to our innovative technology, there is no need for pressure Washing. Although those techniques are still effective, the long-term effect of that process is taxing on all surfaces. MAX Defender™ is the new gentle cleaner to keep all of your exterior surfaces looking brand new.

MAX Defender™ reduces the appearance of stains caused by mold, mildew, algae, and fungus from many outdoor spaces.

Decks – Patios – Stone – Stucco – Vinyl – Wood – Fencing – Composites – Awnings – Concrete – Signs – Pavers – Docks – Patio Furniture – Metal – Asphalt – Brick – And More.

MAX defender composite deck cleaner


Give your deck a fresh look! Eco-friendly MAX Defender™ works on all composite and wood surfaces.

awning cleaner MAX Defender by DeckMAX


Easily maintain hard-to-reach awnings and keep umbrellas clean with MAX Defender™.

siding and shutter cleaner MAX defender by DeckMAX


Enhance the look of your home or office! Eco-friendly MAX Defender™ works on various siding and shutter surfaces.


Keep your outdoor furniture free of mold and mildew with MAX Defender™.

stucco and stone cleaner MAX defender by DeckMAX


MAX Defender™ Safely clean your exterior facades without harmful chemicals or pressure cleaning.


Stop labor intensive pressure cleaning and use MAX Defender™ to keep your paver and patio surfaces clean.

fencing cleaner MAX defender by DeckMAX


MAX Defender™ is a quick and easy way to clean fencing and railings. Just spray on and let nature do the work.


Keep concrete driveways and sidewalks free of ugly stain-causing funguses with biodegradable MAX Defender™.

Before and after results for MAX Defender™

Max Defender before and after DeckMax Concrete Wall Stain
Max Defender before and after DeckMax Patio tiles
Max Defender before and after DeckMax fence posts

Frequently Asked Questions

How do I know it's working?

Upon application, the reaction between MAX Defender™ on the affected areas can change color. Black stains will often turn brown or orange while green stains might turn brown. This is a good thing. These colors will go away over time along with the stains.

Will MAX Defender harm my plants?

Avoid spraying directly on plants. Avoid applying MAX Defender™ on windy days to maximize product coverage and minimize over-spray onto landscapes. To protect plants we recommend watering surrounding landscapes before and after application. Remember algae grows on plants too.

When is the best time to apply MAX Defender™?

MAX Defender™ is best applied to a dry surface on a day that is above 32 degrees. We do not recommend applying MAX Defender™ in the wind as it will reduce the coverage area. MAX Defender™ works best when it has 4-6 hours of dry time prior to any rainfall.

Can I use MAX Defender™ inside?

No. MAX Defender™ is designed to be used as an exterior cleaner and preventative.

What is the best mixture ratio?

We recommend 1 part water to 1 part MAX Defender™ concentrate for all initial cleaning applications and a 3 parts water to 1 part MAX Defender™ for preventative application.

Does the temperature affect MAX Defender™?

No, the temperature does not affect MAX Defender™. However, you should apply it when the temperature is above freezing.

What should I use to apply MAX Defender™?

A garden pump sprayer works well for small areas such as patios and decks. If you are going to be on any kind of inclined surface, be cautious as the surface may be slippery after application. If you are unfamiliar with heights or usage of ladders we recommend using a contractor and request they apply MAX Defender™.

How long does MAX Defender™ last and will it prevent future stains?

MAX Defender™ will continue to clean the surface long after application. And will continue to do so until the stains are completely gone. MAX Defender™ will last for up to one year and in some instances longer. Climate and exposure will determine the length of the cleaning duration. However, an annual preventative application of a 3:1 ratio will prevent biological growth from returning.

Will MAX Defender™ work on siding and fences?

Yes, MAX Defender™ will work on almost any exterior surface. Brick, vinyl siding, stucco, concrete, metal, wood, and composite siding/ decking can all be cleaned with MAX Defender™. Simply apply with a pump sprayer and let the proprietary ingredients do the rest.

What if I apply MAX Defender™ and it does not rain?

It is all right if you do not get rain for several weeks. MAX Defender™ will work with the natural elements to keep cleaning your surface. Even the slightest morning dew will reactivate MAX Defender™. However, MAX Defender™ should not be applied in the rain or if rain is in the immediate forecast.

How long will it take for biological stains to disappear?

The removal time is dependent on the amount of rainfall, the severity, and type of the stain along with the concentration of the mixture used (1:1 to 3:1). Green algae stains are the quickest to be removed usually in 1-3 days while black algae stains take much longer to disappear, approximately 1-8 weeks.

How much area will one gallon of MAX Defender™ cover?

One Gallon of MAX Defender™ diluted as an initial treatment at 1 part water to 1 part MAX Defender™ will cover approximately 400 – 500 square feet. MAX Defender™ diluted as a preventative measure will cover approximately 600 – 800 square feet when mixed 3 parts water to 1 part MAX Defender™. The coverage area will vary based on the material that MAX Defender™ is being sprayed on.