House Grail is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Can You Pour Hydrogen Peroxide Down the Drain? Facts & Safety Tips

Hydrogen Peroxide in glass and clean white cotton

Most of us know hydrogen peroxide’s versatility as a cleaning and disinfecting agent, but it can also be used in other ways—like pouring it down the drain. Pouring hydrogen peroxide down your drains is safe and can help keep them smelling fresh and clean.

In this article, we’ll explore the benefits of using hydrogen peroxide in your drains and how to do so safely. So, whether you’ve got a smelly sink or are just looking for an easy way to clean up your drain, here’s what you need to know about using hydrogen peroxide down the drain.

SAFETY FIRST: Any time you’re using chemicals, you should take proper precautions to protect yourself and your home. Make sure you wear gloves when handling hydrogen peroxide, as it can cause skin irritation.

divider 4

Why Use Hydrogen Peroxide in Your Drains?

Hydrogen peroxide is a natural disinfectant; it’s made up of oxygen and water, so it doesn’t contain any harsh chemicals or toxins. When pouring hydrogen peroxide down your drain, the oxygen bubbles will help to break down any organic matter—like food scraps or grease—that might be clogging your drain.

This makes it a great choice for clogs that are caused by organic matter1. Hydrogen peroxide kills bacteria, mold, and mildew—often the source of bad odors in drains.

If your sink or shower drain is emitting a nasty smell, hydrogen peroxide can get rid of it quickly and keep that bad odor from returning. Not only does this natural solution clean pipes without harsh chemicals, but it’s also economical and easily accessible.

person pouring drain cleaner clog remover down the drain
Image Credit: Dmitry Galaganov, Shutterstock

divider 4 Is Hydrogen Peroxide Safe for Drains?

Yes. Hydrogen peroxide is totally safe to use in your drains. In fact, it’s often safer than using store-bought chemical cleaners. Why? Because store-bought drain cleaners often contain caustic chemicals that can corrode your pipes and cause long-term damage.

By using hydrogen peroxide instead, you don’t have to worry about these potential risks. So it’s a much safer way1 to keep your drains clean without risking any lasting damage. What’s more, it’s just as effective at clearing up stubborn clogs without any of the potential harm.

divider 4

How to Use Hydrogen Peroxide in Your Drains

Using hydrogen peroxide in your drains is pretty easy and straightforward. All you need is 1 cup of the peroxide1 and a tablespoon of baking soda.

Mix the two together and slowly pour the mixture down your drain. Let it sit for 30 minutes, then flush it with hot water to clear away any residue that’s been left behind.

Depending on how bad your drain is, you might need to repeat this a few times to get the results you’re looking for. Eventually, though, you’ll have a clean, fresh-smelling drain. And best of all, you will not have had to use any harsh chemicals.

Hydrogen Peroxide
Image Credit:, Shutterstock

divider 4


Tired of using chemical-laden store cleaners to deodorize your drains? Switch to hydrogen peroxide for a safe, natural, and highly-effective alternative that will keep your pipes and drains smelling great.

Featured Image Credit: pedphoto36pm, Shutterstock


Related posts

OUR categories

Project ideas

Hand & power tools