Easy Steps to Clean Your Artificial Grass and Keep It Looking Great! Remove debris with a leaf blower or stiff brush to prevent build-up. Rinse with water to remove dust and dirt. Use mild soap and a soft-bristled brush to gently scrub any tough spots. Rinse again to remove soap residue. Allow to air dry or use a towel/squeegee to remove excess water. Regular cleaning every few months will help keep your artificial grass looking fresh and fabulous