Top Toilets

Any suggestions on how to remove them, or if I can? The toilet seat is already white, but all brands are brighter!

Yes, you need bleach poor on the whole seat to match. Or get a new seat.

You can clean the rest of whats marked with bleach too:)

like the arrival, may be uneven or scratched or damaged to allow the bleach to get here. In addition, most people probably will not notice it,

Baking soda

I can assume that the white marks are where the bleach got on the seat. You said that the seat was already white so I do not see why you can not get the cleaner and bleach to clean the toilet seat complete, it will do the same.

Use the same cleaner and scrub toilet seat and let it dry before wiping. When you wipe it off, use the same filter to help remove the residue dried. It should bleach the entire seat without streaks.