Utilizing sophisticated in vitro experimental methodologies, the research team systematically evaluated a library of chemicals commonly employed across industrial and agricultural sectors. The substances examined included pesticidal formulations, herbicides, fungicides, and industrial solvents, each scrutinized for their capacity to inhibit or alter the growth dynamics of representative human gut bacterial strains.

So, researchers found that applying solvents and pesticides can be toxic to bacteria. Not much of a surprise, isn't it?