Mix baking soda with 3% hydrogen peroxide into a thick paste
Spread it generously on the stained areas
Let it sit for 30–60 minutes
Scrub with a non-scratch sponge or old toothbrush
Rinse and dry
Works well for organic stains
Won’t reverse deep plastic discoloration
2. White Vinegar Soak (Mineral-Focused)
If the stains look crusty or streaky rather than uniform:
Spray or soak paper towels with white vinegar
Press them onto the underside of the seat
Leave for 20–30 minutes
Scrub gently and rinse
Good for urine + hard water combo
Limited on old yellowing
3. Magic Eraser (Use Carefully):
Try These Cleaning Methods (In This Order)
1. Baking Soda + Hydrogen Peroxide Paste
This is the best “hail Mary” option.
Mix baking soda with 3% hydrogen peroxide into a thick paste
Spread it generously on the stained areas
Let it sit for 30–60 minutes
Scrub with a non-scratch sponge or old toothbrush
Rinse and dry
Works well for organic stains
Won’t reverse deep plastic discoloration