How much to use in a half gallon

It depends on what you are using it for. If you are diluting it to 3% then I dilute the 12% to 6% with an equal amount of water, and then dilute the 6% with an equal amount of water to get 3%. OR --- 4 oz of water to 4 oz of 12 % peroxide is 8 oz of 6% peroxide; 8 oz of 6% peroxide mixed with 8 oz of water is 16 oz of 3% peroxide. Most household uses don't call for more than 3% peroxide, but you can figure out what percentage you want and mix it with water accordingly. I keep a "whitening bucket" filled with water, some detergent, about 4oz of 12% peroxide in which I toss my white laundry items - wash cloths, dish towels, socks, bras, handkerchiefs, undershirts, T-shirts, and so on. Anything that needs whitening goes into the bucket and the entire bucket goes into the washing machine.

I want to brighten the surface of a bathtub that has a non-slip coating in areas, which has discolored, will this help?

It works like a bleach. I would mix it half the hydrogen peroxide and half with water. Try a small area and see how it works. Mix only a small amount for the first time.

Can you use this to pour down your drains in the bathroom and kitchen to kill drain gnats?

I don’t know but I have pored it down my drains

No, but the oder is not strong.

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HARRIS 12% Concentrated Hydrogen Peroxide, 128oz, for Kitchen, Bath, Laundry, Home and Garden with Easy Fill Funnel

HARRIS 12% Concentrated Hydrogen Peroxide, 128oz, for Kitchen, Bath, Laundry, Home and Garden with Easy Fill Funnel

Product ID: 511041068

Details

Brand
HARRIS
Item Form
Liquid
Material Feature
Unscented
Scent
Unscented
Specific Uses For Product
All Purpose

⚡4x stronger cleaning power

🏡multi-surface versatile use

🧼bleach-free oxygen fizz action

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Description

✨ Elevate your clean game with oxygen power — because your home deserves the best! 🏠

SAFE TRUSTED FORMULA - Pet- and people-friendly when used as directed, for worry-free cleaning.
EASY FILL FUNNEL DESIGN - Convenient, mess-free refills keep your cleaning routine seamless and sustainable.
ALL IN ONE HOME SOLUTION - Replace multiple cleaners—laundry booster, stain remover, grout & surface cleaner.
OXYGEN POWERED FIZZ CLEAN - Deep-penetrating, bleach-free formula brightens & whitens without harsh chemicals.
POWERFUL 4 X CONCENTRATION - Cut through grease, grime & stubborn stains with unmatched strength.

HARRIS 12% Concentrated Hydrogen Peroxide is a bleach-free, oxygen-powered cleaning powerhouse in a 128oz bottle. Its 4x stronger formula tackles tough stains, grease, and grime across multiple surfaces—from laundry and upholstery to kitchen and bathroom—while being safe for people and pets. Featuring an easy fill funnel, it replaces multiple cleaners for a streamlined, eco-conscious home care routine.

Specifications

ASIN	B0BL8C5P7G
ASIN	B0BL8C5P7G
Best Sellers Rank	#10,913 in Health & Household ( See Top 100 in Health & Household ) #162 in All-Purpose Household Cleaners
Brand Name	HARRIS
Capacity	128 fluid ounces
Cleaning Agent Formulation	Degreaser, Disinfectant, Stain Remover
Container Type	Bottle
Customer Reviews	4.7 4.7 out of 5 stars (2,488)
Date First Available	November 2, 2022
Global Trade Identification Number	00072725014143
Item Form	Liquid
Item Volume	128 fluid ounces
Item model number	GL61B0750489
Manufacturer	Harris
Manufacturer	Harris
Material Features	Unscented
Material Type Free	Bleach Free
Model Number	GL61B0750489
Number of Items	1
Package Dimensions	12 x 6 x 6 inches; 9.02 pounds
Package Size Name	Gallon
Part Number	GL61B0750489
Product Benefits	Concentrated, Grease and Grime Removal, Laundry Booster, Stain Remover
Recommended Uses For Product	Fizzing action powerfully penetrates & lifts tough stains for an oxygen-powered, whole-home clean. Not for pesticidal use.
Scent	Unscented
Size	128 Fl Oz (Pack of 1)
Special Features	Concentrated, Multi Purpose, Residue Free, Streak Free
Special Ingredients	Hydrogen Peroxide
Specific Uses For Product	All Purpose, Bathroom and Kitchen Surfaces, Fabric, Carpet and Upholstery, Floor, Grout, Tile
Surface Recommendation	Fabric, Carpet, Glass, Tile, Grout, Flooring, Kitchen and Bathroom Surfaces
UPC	072725014143
Unit Count	128 Fluid Ounces

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€ 119.09

Duties & taxes included

In stock

Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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TrustScore 4.5 | 7,300+ reviews

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