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.
Bleach will only remove a small portion of the stain and the scrub brush on concrete will definitely cause permanent damage to the concrete. Once concrete is spot treated wi â¦ th improper tools, chemicals or techniques it can be permanently damaged.o remove stains from blacktop driveways pour kitty litter over the  stain. Give it time to absorb the stains and then sweep it up. Use  soap and water and a bristle brush t â¦ o remove any part of the stain  that is left. Answered.