Cleaning your vinyl siding can be a chore if you don’t have the correct products on-hand to remove stubborn mold or mildew stains, but it can be challenging to pick out these products if you’ve never shopped for one before.
This is why we picked out 10 high-quality options you can compare side-by-side, and there is a short buyer’s guide included that highlights what you want to look for when you shop.
Our Top List
# | Preview | Product | Link |
1 |  | Wet & Forget - Moss Mold Mildew & Algae Stain Remover | No products found. |
2 |  | Simple Green Pro HD Heavy Duty Cleaner Concentrate | No products found. |
3 |  | Scotts Outdoor Cleaner Plus OxiClean Concentrate | No products found. |
4 |  | Star Brite Mold & Mildew Stain Cleaner | No products found. |
5 |  | MR-86 Instant Mold & Mildew Spray | No products found. |
6 |  | Moldex Concentrated Instant House Wash | No products found. |
7 |  | Spray & Forget Revolutionary Roof Cleaner Concentrate | No products found. |
8 |  | 303 UV Protectant Spray for Vinyl Siding | No products found. |
9 |  | RMR-86 Pro Instant Mold Stain & Mildew Remover | No products found. |
10 |  | Granite Gold Daily Cleaner Spray & Refill Pack Streak | No products found. |
1. Wet & Forget – Moss Mold Mildew & Algae Stain Remover
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This is a strong clear that you spray and leave on your siding or surface with no power washing, rinsing, or scrubbing, and it’ll work to get rid of mildew, mold, and algae stains on your home. Once you apply this spray, it can help keep most surfaces clean and stain-free for up to a full year; and this is a bleach-free formula with no phosphates and is non-acidic and biodegradable. It’s a concentrate that you dilute with water to make three gallons of cleaner.
Wet & Forget Takeaways
- Application – Spray
- Concentrate – Yes
- Size – 0.5-gallons
Pros
- No scrubbing or power washing required
- Concentrated formula
- Cleans for up to a year
- Easy to store
Cons
- Has a strong smell
2. Simple Green Pro HD Siding Pressure Washer Cleaner
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This professional-grade product has a non-corrosive formula that allows you to use it on a broad range of applications like walls, floors, appliances, recreational vehicles, cars, and industrial equipment. It works to clean and de-grease the surface, and you can use it with ultrasonic cleaning, parts washing, and pressure washing without an issue. It removes stains while cutting through grease and grime to get your vinyl siding looking like new, and a single gallon bottle will make up to 14 gallons of cleaner.
Simple Green Pro HD Takeaways
- Application – Spray
- Concentrated – Yes
- Size – One Gallon
Pros
- Makes up to 14 gallons
- Cuts through stains and grease
- Broad range of uses
Cons
- Can have uneven results
3. Scotts Outdoor Cleaner Plus OxiClean Concentrate
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This fast-acting formula can reduce your cleaning time because it goes to work as soon as you apply it, and it’ll help lift stains from algae, mildew, mold, and moss out of your vinyl siding with light scrubbing. There are no phosphates or chlorine bleach in this formula, and you can make up to 25 gallons of cleaner with a single purchase. This product is very versatile because it works well on vinyl, wood composite, patio furniture, stone, cement, wood, boat interiors, and more without being too harsh, and it can help prevent stains from forming again.
Scotts Outdoor Takeaways
- Application – Spray
- Concentrated – Yes
- Size – 2.5-gallons
Pros
- Has OxiClean mixed in
- Makes up to 25 gallons
- Very versatile
Cons
- Works better with a pressure washer
4. Star Brite Mold & Mildew Stain Remover + Cleaner
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This is a high-alkaline, triple action formula that will help strip away stains caused by mildew and mold without having to scrub at them, and it contains chelating agents to lift up ground-in dirt, buffered bleach to remove stains, and surfactants to cut through grime and grease. The buffered bleach works well for upholstery and fabrics without breaking down the thread, and this product works on fiberglass, awnings, drywall, concrete, vinyl, grout, tile, siding, roofs, gutters, fabrics, and vinyl upholstery.
Star Brite Takeaways
- Application – Spray
- Concentrated – No
- Size – 22-ounces
Pros
- Can use on fabrics
- Contains buffered bleach
- No scrubbing required
Cons
- Have to apply it more than once to work
5. MR-86 Instant Mold and Mildew Stain Remover Spray
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This is an instant spray cleaner that removes mildew and black mold stains, and you can use it both indoors and outdoors to clean your toilet area, kitchen, vinyl, and drywall without worrying about an overpowering smell. This spray sinks deep into your vinyl to remove set-in stains without needed to scrub at them or use a power washer, and it works on grout, tile, PVC, wood, plastic, stucco, concrete, fiberglass, vinyl, and more. There are two different sizes available, and it’s easy store.
MR-86 Takeaways
- Application – Spray
- Concentrated – Yes
- Size – One gallon
Pros
- Removes set-in stains
- Works on a range of surfaces
- Use indoors and outdoors
Cons
- Can irritate eyes and skin
6. Moldex Concentrated Instant House Wash
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You’ll get an advanced bleach gel with this cleaner that sticks to your vinyl siding and sinks deep down to remove set-in stains from mildew or mold, and the bottle is made out of 100% recycled plastic. This product comes from manufacturers in the United States to help ensure that it’s very high quality, and it’ll easily remove stains without having to scrub at them. This product will clean up to 4,000 square-feet while reaching up the the second story of your home.
Moldex Concentrated Takeaways
- Application – Spray
- Concentrated – No
- Size – 1.75 quarts
Pros
- Easy to use
- Has a bleach gel
- Cleans deep stains with no scrubbing
Cons
- Better for maintenance than deep cleaning
7. Spray & Forget Revolutionary Roof Cleaner Concentrate
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This product will make up to 10 gallons of product to clean up to 2,000 square-feet, and you don’t have to rinse it off once you apply it. This is an eco-friendly product that has a non-corrosive formula that uses no lye, bleach, phosphates, acid, or heavy metals. It works on a host of exterior surfaces without being too harsh, and a single bottle will make up to 10-gallons of cleaner when you dilute it with water at the correct levels.
Spray & Forget Takeaways
- Application – Spray
- Concentrated – Yes
- Size – One gallon
Pros
- Eco-friendly formula
- No bleach, lye, or acid
- Makes up to 10 gallons
Cons
- Leaves spotty results
8. 303 UV Protectant Spray for Vinyl Siding
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This product works to clean your siding while brightening the surfaces to keep it looking like new, and it provides a layer of UV protection for plastic, finished leather, rubber, PVC, vinyl, fiberglass, and gel-coat surfaces. It repels dust and stains while shielding your siding from cracks, and this is a rinse-free formula that leaves a dry matte finish that is non-greasy. The spray-on formula comes with a trigger bottle for easy application, and there are no silicone oils or petroleum distillates.
303 UV Protectant Takeaways
- Application – Spray
- Concentrated – No
- Size – 10 fluid ounces
Pros
- Protects from UV damage
- Non-greasy formula
- Don’t have to rinse off
Cons
- Can leak
9. RMR-86 Pro Instant Mold Stain & Mildew Stain Remover
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You get a hybrid featuring sodium hypochlorite with deep penetrating surfacants with this product to help lift stains set deep into your siding, and this formula is up to five times stronger than other options to help get rid of stains very quickly. This product is ready to use as soon as you get it, and it’ll dissolve mildew and mold stains without having to sand or scrub at it. You can use this product to remove stains from crawlspaces, attics, concrete flooring, wood, plywood, brick walls, vinyl, decks, and more.
RMR-86 Pro Instant Takeaways
- Application – Spray
- Concentrated – Yes
- Size – 2.5 gallons
Pros
- Hybrid formula
- Works very quickly
- Can use on a range of surfaces
Cons
- Expensive for the amount you get
10. Granite Gold Daily Cleaner Spray & Refill Pack Streak
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The final product on the list doesn’t leave behind smudges, streaks, or a spotty finish when you use it, and it works well to help you protect natural stone surfaces like marble, granite, or travertine and ceramic, tile, or quartz tile surfaces. This is a non-toxic, non-acidic formula that has no ammonia or phosphates to make it healthier overall to use, and this allows you to use it on surfaces where you prepare food. You’ll get a subtle citrus scent with this product that lingers after you use it, and it goes deep into the stains to help lift them away and prevent them from returning.
Granite Gold Takeaways
- Application – Spray
- Concentrated – No
- Size – 24 and 64-fluid ounces
Pros
- Safe to use on food preparation surfaces
- Works well on stone surfaces
- Prevents stains from forming again
Cons
- Spray bottle doesn’t work well
Verdict & Review
Wet & Forget Stain Remover
Pros
- No scrubbing or power washing required
- Concentrated formula
- Cleans for up to a year
- Easy to store
Cons
- Has a strong smell
Our pick for the best vinyl siding cleaner is the Wet & Forget stain remover because you don’t have to scrub, power wash, or rinse when you use it to make your cleaning job go faster. It also helps to keep your home free of stains for up to a year after you apply it, and it’s a non-acidic formula that has no bleach to make it healthier for the environment.
Buyer’s Guide
Concentrated or Diluted
A concentrated vinyl cleaner is a very potent product that requires you to dilute it in water before you use it. This can take time, but you usually get a lot more cleaning power because it dilutes down to several gallons. It’s nice for larger homes.
Cleaning Capabilities
You want a vinyl siding cleaner that will tackle older mold and mildew stains, and it should be strong enough to help prevent the stains from coming back for several months after you apply it. Check and see if it protects against UV damage, if you have to scrub it once you apply it, and how long it protects for when you compare products.
Application
Do you have a power washer handy to use with your vinyl siding cleaner, or will you have to rent one? Can you get away with a simple sprayer hooked to your hose, or do you need something more powerful? Consider what you want to clean, your house size, how set-in the stains are, and whether or not you have the equipment available to use the product you pick.
Smell
Many of these cleaners have very strong chemicals like bleach in them, and this lends them a very strong smell that can irritate your eyes and lungs. Consider where you’re going to apply the cleaner and see if you have adequate ventilation to prevent this irritation.
Vinyl Siding Cleaner FAQs
Can you use vinyl siding cleaner on other surfaces?
Some of these cleaners are only for vinyl, while others allow you to use it on other surfaces. Check and see what the label recommends and follow these recommendations when you use it. If it says vinyl-only, don’t use it on other surfaces because you risk damaging them.
What makes vinyl siding cleaners important?
These cleaners come specially formulated to get rid of mold and mildew stains on your home to make it look better, and many of them form a protective barrier to stop the stains from forming again. This can help your siding last longer.
Can you use bleach to clean vinyl siding?
It is possible to use bleach to clean your vinyl siding and kill the mold or mildew, but you should dilute it down before applying it. Also, you’ll want to rinse your siding thoroughly when you finish, and the bleach can kill any grass it lands on when you rinse it away.
