TeRust Rust Remover powder effectively eliminates rust stains from granite, marble, travertine, limestone, terrazzo, concrete, brick, and sanded grout. It has a special chelate blend to draw rust stains out of stone using a stain - process reversal technique.
Just scoop the required powder, add water to form a toothpaste - like consistency. Cover it with plastic wrap and poke some holes with a toothpick. After 24 - 48 hours when the powder dries, remove the poultice and the stain will be gone. Note that calcium - based stones may need repolishing as they can get etched.
Using TeRust Rust Remover is easy. First, scoop out the right amount of powder and add water to make it as thick as toothpaste. Then, cover the area with plastic wrap and use a toothpick to make a few holes in it. Wait for 24 to 48 hours until the powder dries. Once it's dry, remove the poultice and the rust stain will disappear. Keep in mind that if you're using it on calcium - based stones like marble, they might get etched. So, you may need to repolish them after using this product. For best results, store the product in a cool, dry place.