can I use the 30 second cleaner on my shower walls

I would NOT use it in the house as it's designed to be used outdoors. Thus the name - outdoor cleaner.

So is this 4 gallons 4 quarts

Thanks for your question! This is for 4 bottles of 1 gallon each. So you will receive 4 gallons total.

Can this be used on a sealed flagstone pool patio?

I used it for my house. And it worked well. I’m sure it’ll do wonders for the patio as well

I sprayed over this thing on the roof. it did clean, although i had to brush off moss. however, it is showing yello after application. is it expected?

To kill moss on your roof shingles mix 1 gallon of bleach, 1 gallon of water, & 1 cup of dawn dishwashing detergent. Spray it on and let it sit with no chance of rain. Shingle manufactures recommend it. I’m sorry I don’t know about the yellowing.

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Outdoor Cleaner Dirt,Mold & Mildew Cleaner & Stain Remover Concentrate | 1 Gallon

Outdoor Cleaner Dirt,Mold & Mildew Cleaner & Stain Remover Concentrate | 1 Gallon

Product ID: 1911930

Details

Brand
30 SECONDS
Item Form
Spray
Material Feature
Biodegradable
Scent
Wood
Specific Uses For Product
outdoor

🌿Plant & lawn safe biodegradable

🧴Concentrated formula, mix 1:1

⏱️Fast-acting in 30 seconds

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$177.87

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
30 SECONDS
Item Form
Spray
Material Feature
Biodegradable

Description

⏱️ Clean Fast, Live Fresh: Outdoor Stains Don’t Stand a Chance!

ECO FRIENDLY SAFE - Biodegradable formula that protects your plants and lawn while cleaning aggressively.
POWERFUL CONCENTRATE - Mix half product, half water for a cost-effective, heavy-duty clean every time.
EFFORTLESS APPLICATION - Ideal for hand pump sprayers or pressure washers—control usage and maximize efficiency.
RAPID STAIN ERADICATION - Watch mold and mildew vanish in just 30 seconds—no more waiting around.
VERSATILE SURFACE SAVIOR - From vinyl siding to concrete, restore multiple outdoor surfaces with one solution.

30 SECONDS Outdoor Mold & Mildew Stain Remover Concentrate is a fast-acting, biodegradable cleaning solution designed to eliminate mold, mildew, dirt, and grime from a wide range of outdoor surfaces. Its powerful 1:1 concentrate formula delivers immediate visible results within 30 seconds, is safe for plants and lawns, and works effectively on vinyl siding, concrete, wood, and more—making it the go-to choice for professionals and homeowners seeking a reliable, eco-conscious outdoor cleaner.

Specifications

ASIN	B000VRQSIK
Brand	30 SECONDS
Brand Name	30 SECONDS
Contains Liquid Contents?	Yes
Customer Reviews	4.5 out of 5 stars 4,125 Reviews
Global Trade Identification Number	00040235751285
Included Components	1 Bottle
Item Form	Spray
Item Type Name	30 SECONDS Outdoor Cleaner, 1 Gallon - Concentrate
Item Volume	5000 Milliliters
Manufacturer	Collier
Material Feature	Biodegradable
Material Features	Biodegradable
Model Number	1G30S
Number of Items	1
Part Number	1G30S
Scent	Wood
Size	128 Fl Oz (Pack of 1)
Special Features	Concentrated
Specific Uses For Product	outdoor
Surface Recommendation	Concrete,Vinyl,Wood
UPC	040235751285
Unit Count	128.0 Fluid Ounces

Reviews

A**E

29.04.2026

B**6

24.03.2026

R**Z

24.06.2023

C**E

24.03.2026

J**Y

27.04.2026

B**K

27.04.2026

K**R

13.04.2026

P**2

28.03.2026

S**H

20.02.2023

A**ー

25.12.2025

A**.

6.04.2024

Y**I

31.12.2025

H**E

31.12.2025

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