The Most Overlooked Part of Your Toilet Is Really Dirty—Here's How to Clean It

Being thorough when cleaning your home's toilet is essential for maintaining proper bathroom hygiene. Bacteria, germs, and mineral deposits naturally accumulate in hidden spots, like under the rim, around the hinges, along the bolts, at the base—and especially behind a toilet. “When these areas are neglected, they can cause lingering odors, stubborn stains, and grime,” says Heather Day, principal scientist at The Clorox Company. “To get a bathroom that looks and smells clean, it’s important to pay attention to these often-overlooked spots.”

Below, our cleaning experts share the best tips for tackling the hard-to-access back of your toilet, along with the products and tools that will make the task easier.

The Importance of Cleaning Every Part of Your Toilet

“Skipping these areas will allow urine residue to dry and become hardened, forming difficult-to-eliminate stains and odors later on,” warns Marisol Rivera, cleaning expert and professional organizer at Sparkly Maid Austin.

"Many of my clients have believed their bathrooms were clean, when in reality they were unaware of hidden bacterial build-up," shares Marisol Rivera, cleaning expert and professional organizer at Sparkly Maid Austin. "It's a hygiene concern, as well, because bacteria can be transferred through hand contact from tight spaces."

Urine and toilet water can spray and accumulate in unseen areas behind the seat, under the tank, the bolts at the bottom, and at the rear of the bowl. "It's an awkward area of the bathroom because you have to really bend down to access the area," acknowledges Adriana Aziz, operations manager at Maid for You. "Unfortunately, this is where a lot of bathroom smells come from."

How to Clean Behind Your Toilet

Before cleaning, Rivera recommends moving everything off the floor and out of the toilet's path, then vacuuming, wiping, or sweeping up any loose debris.

Then, it's time to get a little innovative: “To clean the space behind the seat and tank, use either a long-handled microfiber mop head or a flexible dusting wand,” she suggests. “In tight spaces, wrap a microfiber cloth around a flat paint stirrer or an old plastic knife to get into spaces your fingers cannot fit into.” Microfiber cloths pick up dust, hair, and bacteria much better than paper towels, and removing the toilet seat provides better access to tight crevices that tend to collect hidden grime. The space and bolts at the base of the toilet can be easily cleaned with an old toothbrush or a narrow grout brush.

“Clean the entire area with a bathroom cleaner, allowing it to sit for several minutes to loosen the grime,” Rivera says. Either commercial bathroom cleansers or white vinegar can effectively remove hard water stains and mineral buildup.

For Extra-Stubborn Stains

If your regular cleanser isn't cutting it, Rivera suggests using a pumice stone on stubborn mineral stains—though you risk scratching porcelain surfaces. You can also apply a mixture of baking soda and dish soap. Allow it to sit for a few minutes before scrubbing. If you prefer natural solutions, create a good paste to clean with. 

How to Prevent Future Buildup Behind Your Toilet

Day recommends thoroughly cleaning and disinfecting your toilet at least once a week—including those hard-to-reach areas. "This will ultimately prevent grime, mineral buildup, and bacteria from accumulating to the point where they become difficult to remove."

And it's worth taking those extra steps: "Make removing the toilet seat part of your weekly routine so you can thoroughly clean around the hinges, bolts, and base," Day adds. "By staying ahead with this proactive approach, you'll find that dirt will have less chance to accumulate, and your toilet will remain genuinely clean between deep cleanings."