Soap and water and bleach or muriatic acid
To be totally safe, it is best to know what kind of stone it is, and how it is finished. Until then, use something very mild. I use Fantastic Oxy on my stone tables. It cleans them up nicely, and has not damaged the surface at all.
The preposition for "He cleans the room" would be "in." So it would be "He cleans in the room."
Someone who cleans buildings
Home Depot and other hardware stores sell Graffiti removers in an aerosol that will remove most "permanent" stains from metal and ceramic. Usually found near paint thiners. Test on a small area first.
Cleans
The plant that cleans coal is the Preparation plant.BOB
Servents and house maids cleans apartments perfectly.
Bruno cleans is very effectively with his tongue.
hang cleans are harder, less of a movement so less momentum going into the explosive lift.
Spongebob.. he mops and cleans the gum from under the table.
It's present tense.
Uncle Cleans Up was created in 1965.