Yes. Often times before the fertilizer can be swept off the concrete, either rain or water from a sprinkler system hits the fertilizer and turns the iron in the fertilizer to iron oxide, commonly known as rust.
This is one of the most stubborn rust problems that you can find. Many people will try muriatic acid or other harmful chemicals that are not only dangerous to your health, but also dangerous to the environment and can even damage cement.
Fortunately there is an alternative, Concrete Rust Remover. The product is safe to use, biodegradable and the most effective product we know of in removing rust from concrete. Please let us know if you're in need of our pressure cleaning service to use this product on your sidewalk or driveway.
Yes it is very important to remove any type of concrete rust stain or concrete oil stains . With the safety also because the chemicals which is used for that is very dangerous. And I want tell to if this post would be in more detailed then it might be more informative.
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