You've probably scrubbed those black streaks on your siding until your arms hurt, only to watch them reappear a few weeks later. That's because they're not dirt at all. They're algae called Gloeocapsa magma, and it actually feeds on the limestone filler in your vinyl siding. Regular scrubbing just spreads the spores around, making the problem worse over time. The algae thrives in humid conditions and shaded areas where moisture hangs around. What you need isn't elbow grease but the right treatment. A Pressure Washing Service Port Chester NY knows how to kill the algae at its source without damaging your siding. Same goes for those dark stains on your driveway and walkways, which is why finding a reliable Paver Sealing Company near me makes such a difference in keeping your property looking clean year-round. Sealcoating By Sam's Landscaping : https://www.google.com/maps?cid=6455514313917383434 Find out more : https://gulfsena.com/blogs/59219/Why-Those-Black-Streaks-on-Your-Siding-Won-t-Scrub