10 Best Mildew Cleaner For A Tents 2026 in the United States

The 30 Seconds Outdoor Cleaner is a versatile product designed to quickly clean stains caused by algae, mold, mildew, and moss. Its effectiveness is noteworthy, as it works on a wide range of surfaces including wood decks, concrete, asphalt, brick, canvas awnings, and vinyl siding. This makes it a great choice for users seeking a multipurpose mildew cleaner for their tents and other outdoor areas.

Safety is a strong point with this cleaner, as it is designed not to harm lawns, trees, shrubs, or landscaping when used as directed, making it safe for use around the typical outdoor environments where tents are set up. Ease of use is another advantage, with a simple hose-end sprayer attachment that eliminates the need for pressure washing. Users just need to spray the cleaner onto the surface and rinse it off.

The 30 Seconds Outdoor Cleaner excels in effectiveness, safety, and ease of use. Users looking for products with residual protection might need to consider additional solutions.

The Wet & Forget Outdoor Moss, Mold, Mildew, & Algae Stain Remover is designed for easy and effective cleaning of outdoor surfaces like roofs, driveways, patios, and decks. One of its standout features is the Xtreme Reach Hose End Refill, which attaches to a garden hose and offers a jet tip that sprays up to 30 feet, making it highly effective for reaching high and hard-to-access areas. The fan tip allows for quick application across large surfaces without the need for scrubbing, rinsing, or pressure washing, simplifying the cleaning process substantially.

Users need to apply the product on a dry surface and avoid rinsing, ensuring there’s no forecasted rain within 4-5 hours and keeping the temperature above 55°F for optimal performance. Effectiveness can vary, with green stains clearing up within 1-2 weeks, while more stubborn stains may take several months to fully disappear. The product also provides long-term residual protection, with surfaces potentially staying clean for up to a year or longer. It’s bleach-free and non-acidic, making it safer around plants, although users should take care to flush plants with water before and after application and avoid using the product near bodies of water.

With an unlimited shelf life and coverage of up to 2,000 square feet, it’s a durable and efficient option for extensive cleaning tasks. However, heavy stains and porous surfaces will require more product, which could increase costs. The cleaner is unscented and comes highly rated by users, reflecting its reliability and effectiveness in tackling outdoor stains.

Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover is a versatile outdoor cleaner designed to effectively tackle green and black stains on a variety of surfaces including tents, roofs, wood, decks, concrete, and more. One of its major strengths is its ease of use; you simply mix it with water, spray it on, and let nature do the rest—no scrubbing or rinsing needed. This can be especially convenient for cleaning tents as it minimizes physical effort and saves time.

It is also fragrance-free, which is a plus for those sensitive to strong scents, and the product has an unlimited shelf life once mixed, offering great value for long-term use. However, the cleaner works best when used under specific conditions; it should be applied on a cool day without rain in the forecast for 4-5 hours to prevent rapid evaporation and ensure efficacy. The time it takes to see results can vary significantly—green stains may disappear in a couple of weeks, but more stubborn black stains could take several months or even up to a year to clean fully.

This slow-acting nature may be a drawback for those seeking immediate results. Additionally, while it is marketed as a multi-surface cleaner, always test a small area on your tent to ensure material compatibility and avoid any potential damage. If you’re looking for a low-effort, long-term solution to keep your tent and other surfaces mildew-free, this product is worth considering.