Wet & Forget
Wet & Forget Outdoor - Mold, Mildew, Stain Remover Concentrate
Best low-effort solution for homeowners cleaning exterior surfaces.
Effortlessly tackle outdoor mold and mildew stains with Wet & Forget Outdoor Concentrate. This powerful liquid formula eliminates unsightly black and green stains from various exterior surfaces without the need for scrubbing or rinsing. Simply apply and let nature gently clean over time, with results lasting up to a year or more. It's concentrated for outdoor use and formulated to be safe around plants when used as directed, offering a convenient and effective solution for maintaining your home's exterior.
$21.99
Owner Satisfaction
4.6
/ 5
Category Rank
133
/ 738
#133 in Muti-surface Cleaners
Price vs Category Average
-1%
Below average
Form
Liquid Concentrate
/ Liquid Concentrate
Who it's for
- Homeowners looking to avoid strenuous manual labor
- Busy property owners wanting long-term maintenance results
- DIYers needing a safe solution for delicate exterior surfaces
Who should skip it
- Impatient users needing immediate visual results
- Budget-conscious shoppers comparing upfront costs
- Residents living in areas with unpredictable or rainy climates
Performance breakdown
Labor Efficiency
Eliminates the need for back-breaking scrubbing or manual rinsing.
Longevity
Active formula keeps surfaces clean for up to a full year.
Surface Versatility
Safely treats a wide range of exterior materials without damage.
Application Ease
Simple spray-and-forget process makes exterior maintenance remarkably straightforward.
Environmental Safety
Phosphate and ammonia-free composition protects surrounding plant life.
Concentration Value
High-yield formula provides excellent coverage for large outdoor areas.
Key Specs
Form
Liquid Concentrate
Volume
1 Gallon (128 oz.)
Active Ingredient
Alkyl Dimethyl Benzyl Ammonium Chloride 9.9%
pH
8.0
Color
Blue
Fragrance
Slight Almond
Dimensions
6.25" W x 10.5" H x 4.5" L
EPA Registered
Yes
Features
- No scrubbing or rinsing required
- Long-lasting clean up to a year
- Works with nature over time
- Removes black and green stains
- Safe for plants when used as directed
- Concentrated formula for outdoor use
- Phosphate and ammonia-free
What customers say
Customer satisfaction centers on the product's exceptional ease of use and low effort application. Users highly value the spray and leave method, which removes the need for strenuous scrubbing or pressure washing on large areas like roofs and siding. The core appeal is its long term efficacy against mold, mildew, and algae, providing sustained cleaning as natural elements take over. While results are gradual, this sustained action is a major benefit. The primary friction point is the expectation of immediate results; patience is required for the slow, effective cleaning process. Overall, consumers find significant value in trading speed for substantial labor savings and lasting exterior cleanliness.
Know before you buy
No. The formula is designed to work with wind and rain over time, so you can simply spray it on and leave it to do the work for you.
Yes, it is safe for plants when used as directed. We recommend rinsing any plants that may have been accidentally sprayed with fresh water to ensure they remain unaffected.
Once the stains are removed, the treatment can keep surfaces clean for up to a year or more, depending on the environment and exposure to the elements.
It is versatile enough for most exterior surfaces, including siding, decks, brick, stone, concrete, and painted surfaces. Always test a small, inconspicuous area first if you are unsure about a specific material.
You must dilute the concentrate with water before use. The standard mixing ratio is one part Wet & Forget to five parts water.
No. This product is specifically formulated to eliminate black and green stains caused by mold, mildew, and algae. It is not designed to remove rust, oil, or other non-biological stains.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$22