How to Remove Yellow-Brown Stains From a Plastic Toilet Seat (Before You Replace It)|

• Mix dish soap with hot water
• Gently scrub the underside
• Rinse thoroughly and dry

If stains remain, move on to stronger methods.

4. Baking Soda and White Vinegar

This classic combo works well on mineral and urine stains.

• Sprinkle baking soda over the stain
• Add white vinegar and let it fizz
• Let sit 10–15 minutes
• Scrub gently and rinse

It’s effective, inexpensive, and non-toxic.

5. Hydrogen Peroxide + Baking Soda Paste

For deeper stains:

• Mix baking soda with hydrogen peroxide into a thick paste
• Apply and let sit for 15–20 minutes
• Scrub gently and rinse