Landscape rocks, such as white marble, can add character to your garden without breaking your budget. White marble rocks can replace mulch around your flowers for a clean and fresh feel to your yard. White marble is a common sight in many gardens because of its low maintenance and pleasing look. It is not too expensive and easy to install. However, white marble still needs to be cleaned every so often to keep it looking its best.
Spray the white marble rocks with your garden hose. Spray them with enough pressure to remove dirt but not enough to send them flying.
Allow the white marble rocks to air dry in the sun.
Fill a tub or large bucket with warm water, 1 cup of bleach per 10 gallons of water and 2 tablespoons of mild dishwashing liquid.
Shovel the white marble rocks into a tub of water. Bleach mixture and let the rocks soak over night. If needed, stir the rocks in the tub with the handle of a broom.
Place a window screen on top of two blocks and push the blocks apart until you have a large opening between the blocks. The screen will act as a filter for the rocks.
Shovel the rocks onto the screen in small batches at a time. Spray the rocks with fresh, clean water from your garden hose.
Transport the white marble rocks to a tarp that you have laid out in the sun and allow them to air dry in the sun.
Return the clean marble rocks to their original home.