I need help identifying this stain. Customer said it only appeared when the landscaper had placed miraclegrow on the concrete and it stained it. I tried one restore on it and it did bubble up pink, green and yellow but did nothing to remove the stains. Any thoughts? My next move was to try f9 products. I though f9 BARC but I’m not sure it’s irrigation or fertilizer staining.
Thanks!
the inter web says 50/50 white vinegar, so i suspect some acid product.
That is definitely not from the irrigation. Also do not fertilize with leachable fertilizers this time of year. Waste of time, money, and pollutes the water. Youll have to apply cleaning product to whole walkway area to make sure even cleaning. Id be trying muriatic and brush and a prayer or walking away and not making it my problem. That would depend on my relationship with the customer
