I ended up taking 200 grit wet or dry sand paper and wet buffing the whole top down.
White marble stain removal.
This is a material made from a porous solid and a solvent some sort of liquid to form a paste type material that has the consistence of cake icing or peanut butter.
Rub the powder onto the stone with a damp cloth or by using a buffing pad with a low speed power drill.
Then i went over it with 1000 grit wet dry.
More persistent ink stains and larger paint stains can be removed with the help of a marble poultice that will soak up the pigments from the stain within a couple of days.
If the ammonia and water mix doesn t do the trick acetone a solvent used in products such as nail polish remover can help lift the stain and get into the craggy pore of marble.
Avoid using abrasives which may damage the surface.
Apply it to the stain and cover it with plastic for 24 hours.
There also are light grayish stains around the drains.
Cultured marble a mix of marble powder and a polyester resin requires a gentle touch when it comes to cleaning.
You can either use regular marble cleaner or try removing the stain using grade 0000 steel wool.
Marble is a porous material as is our skin and like our skin when we have a wound making a poultice to draw the stain out of your marble works in just the same way making a poultice to draw out infection in a wound would.
To clean stained marble mix baking soda and water until it s a thick paste.
I have seen two approaches mentioned on line to remove stains from cultured marble.
Unfortunately rust stains are the most difficult of stains to remove from marble.
Once the stain has been removed wet the surface with clear water and sprinkle on marble polishing powder available from a hardware or lapidary store or your local stone dealer.
How to remove ink stains and paint stains from marble surfaces you can use lacquer thinner to get ink stains from markers pens etc and small amounts of paint out of marble.
None of these things worked in my yellow stain.
Method of stain removal.
Vinegar chlorox peroxide comet.
Instead use a soft cloth and liquid based stain removers such as vinegar or a mild soap and water to treat many kinds of stains.
Use a damp cloth to wipe away the mixture repeating the process if the stain is still there.
Pouring the acetone concentration into or onto the stain probably won t be effective though.
Most of them can be removed with a marble poultice.
Other than the stains the cultured marble is in very good condition and the original gel coat still is relatively shiny.
If you try these methods and still do not have success contact a professional to assess the problem.
Water stains can be easily removed from marble.