Our relationship with toilets is complicated. We trust our bare derrières to the seat day in and day out, yet most of us don’t think twice about how toilets function. DIY fixes are usually limited to what we can do by jiggling the handle or plunging—and then we either resign ourselves to a finicky flush or call in a plumber. Save money and water! Here are three inexpensive and easy-to-install parts for your tank that every behind can get behind.

Replacement part: Korky 100BP Ultra High-Performance Flapper Fits Most Toilets

No Special Expertise Required

You’ll have to stick your arm into the tank to switch it out, but you should be able to get this job done in just a few minutes. Amazon

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When you push down on the handle to flush your toilet, a flapper inside the tank is unsealed, releasing the water in your tank into the bowl. If your toilet won’t stop running, there’s a good chance it’s because the flapper is no longer sealing. This replacement flapper works with most toilets and is made of chlorazone rubber to resist corrosion from city water, well water, chlorine, and bacteria.

Everything you need: Fluidmaster Universal Toilet Fill Valve and Flapper Repair Kit

Make It Easy On Yourself

Don’t forget to shut off the water first. Amazon

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If you’re confident in your skills to replace the flapper, you might as well go for a valve and flapper combo kit, for those times when a running or leaky toilet is a result of a fill valve problem. The fill valve is the mechanism that controls the water coming into your tank, and if your tank fills slowly or you’re getting a weak flush, it may be the culprit. This kit is designed to fit most toilets, and you can adjust the height of the valve between 9 and 14 inches to accommodate the height of your tank. The most important step of valve and flapper replacement is to turn off the water to your tank first and flush to empty the tank and bowl. Then follow the instructions to remove the old valve—and install the new one in no time.

Eco-friendly: Next by Danco HC660 Toilet Fill Valve Repair Kit

Detects Leaks

Reduce your usage while you’re at it. Amazon

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Fixing a running or leaky toilet with a new flapper or valve definitely saves water, but this repair kit wastes even less H2O. Standard fill valves are designed to work with all toilet bowls—and use the largest size as a guide for how much water to release. You can adjust this environmentally friendly alternative to deliver the perfect amount of water for your toilet. This unique fill valve system features cleaning jets that keep sediment from building up in your tank and corroding your flapper, and it even will alert you with a noise when there’s an unexpected leak. Note: You will need to buy your own flapper to use with this kit.