Researchers studied how to clean up soil contaminated with harmful chemicals using a type of bacteria called Arthrobacter globiformis. They tested adding different amounts of two types of surfactants to see if it helped the bacteria break down the chemicals faster. After 150 days, they found that adding a biosurfactant called rhamnolipids at a specific concentration helped the bacteria remove more of the chemicals compared to using the bacteria alone or the surfactant alone. This method was shown to be effective, cost-efficient, and could be useful for cleaning up contaminated farmland soil.