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.
1 Clean the stain off with the mixture. 2  If the stain is not removed, strengthen the mixture by one part (1 part acid with 19 parts water). 3  Continue making the solution stronger until the stains are removed. 4  Once removed, rinse the area thoroughly with clean water.teps to Remove the Stain: 1  Sandblasters can be rented at most home improvement or hardware stores. 2  Once the stain has dried, it can be sandblasted off of the surface of the concrete. 3  To clean up, sweep up or wash away the sand.