1 Biologics are expensive. 2  A biologic drug may cost about $1,000 or more per month. 3  Before starting to take a biologic medication, make sure you can afford it either through insurance coverage or your own finances.
Fertilizer Stains on Concrete. Fertilizer rust stains on concrete comprise some the most powerful and embedded tough rust stains to eliminate. These stains can be removed with our professional concrete rust removal product, F9 BARC.[img src=http://www.front9restoration ....9 rust removal productâ F9 BARC â is the most effective concrete rust remover and will not harm plants and grass. Professional application by professional power washing companies is required for maximum results, due to the nature and depth of these types of stains.
They are only soluble in a mild acid solution. I would start with a clear white vinegar, diluted 50:50 with water, and see if that brings the stains out. You will need to apply the acid solution on the stain multiple times, scrub lightly, and then rinse.Test in a small area to ensure you are getting the results you desire. If the vinegar does not work, you may need to try a stronger acid, such as muriatic. Dilute the stronger acid 40:1 with water.Also, be aware that the acid may etch or change the profile of the concrete in the areas you clean. Find Concrete Cleaning Products. Stains on a concrete patio resulting from plant fertilizer.ou will need to apply the acid solution on the stain multiple times, scrub lightly, and then rinse. Test in a small area to ensure you are getting the results you desire. If the vinegar does not work, you may need to try a stronger acid, such as muriatic. Dilute the stronger acid 40:1 with water.