Zinsser Jomax House Cleaner and Mildew Killer
Best exterior cleaner for homeowners wanting effortless mold and mildew removal.
Restore your home's exterior and eliminate unsightly mold and mildew with Zinsser JOMAX House Cleaner and Mildew Killer. This potent liquid formula effectively tackles tough dirt and stains, revitalizing surfaces. Simply mix with bleach and water, apply, let it work for five minutes, and rinse away. It's an economical choice, as one gallon yields twenty gallons of cleaning solution, and it's safe to use near plants and shrubs. JOMAX offers a fast-acting solution for spring cleaning or preparing surfaces for a fresh coat of paint, requiring no scrubbing.
$17.99
Owner Satisfaction
4.5
/ 5
Category Rank
229
/ 581
#229 in All-Purpose Cleaners
Price vs Category Average
-29%
Below average
Form
Liquid
/ Liquid
Who it's for
- Homeowners battling stubborn mold and algae growth
- Property owners cleaning diverse exterior materials
- Budget-conscious buyers tackling large surface areas
Who should skip it
- Users wanting to avoid handling harsh household bleach
- Gardeners worried about protecting delicate surrounding plants
- People looking for a low-effort, no-scrub cleaning solution
Performance breakdown
Cleaning Efficacy
Rapidly dissolves stubborn mildew and grime without the need for scrubbing.
Yield Efficiency
The high-concentration formula provides exceptional value by yielding twenty gallons total.
Application Speed
Five-minute dwell time makes exterior restoration projects move incredibly fast.
Surface Versatility
Ideal for prepping various exterior substrates before applying fresh paint.
Landscape Safety
Formulated to protect nearby plants and shrubs during the cleaning process.
Ease of Preparation
Simple mixing process requires only bleach and water for immediate use.
Key Specs
Form
Liquid
Odor/Scent
Vinegar
Net Content
1 gal
Compositions
Glacial Acetic Acid, Sodium Dioctyl Sulfosuccinate, Sodium O-Phenylphenate
VOC Content
320 g/L
Flash Point
94 deg C
Boiling Point
100 deg C
Flammability Rating
1
Features
- Kills mold and mildew quickly
- Removes tough dirt and stains
- No scrubbing required
- Economical concentrate formula
- Safe for use near plants
- Restores curb appeal
What customers say
Consumers overwhelmingly praise Zinsser Jomax for its exceptional efficacy in removing stubborn mildew, mold, and grime from exterior surfaces like siding and decks. Users consistently report professional grade cleaning results, often restoring weathered appearances, making it an excellent preparatory step for painting. The concentrated formula is highly valued for offering strong coverage and excellent value compared to ready to use options. Its powerful action frequently reduces necessary scrubbing time. While the strong odor necessitates good ventilation and care must be taken to protect landscaping during application, the consensus confirms Jomax is a reliable, heavy duty cleaner that effectively solves severe mildew issues, establishing it as a top choice for exterior maintenance.
Know before you buy
No, scrubbing is not required. Simply apply the solution, let it sit for five minutes to break down the mold and mildew, and rinse it away.
One gallon of Zinsser JOMAX concentrate yields 20 gallons of ready-to-use cleaning solution when mixed with bleach and water.
Yes, the formula is designed to be safe for use near plants and shrubs, provided you follow the application instructions.
Absolutely. It is an effective way to clean surfaces and remove grime, ensuring a clean base for a fresh coat of paint.
To activate the formula, you must mix the JOMAX concentrate with household bleach and water according to the instructions on the label.
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$18