Antioxidants are important groups of compounds that may help remove potentially harmful chemicals. This may involve removal of undissolved substances, dissolved substances and harmful microbes. Human feces contains a variety of potentially harmful human pathogens. Animal waste includes a number of potentially harmful pollutants. Pesticides are used to control organisms that are considered to be harmful. The mixture must be sterile in order to avoid introducing potentially harmful microbes. Nicotine is potentially harmful to non-users. Eight samples were free of harmful chemicals. They eat whatever they can catch, including both harmful and beneficial insects. Mariupol leads Ukraine in the volume of emissions of harmful substances by industrial enterprises. Pollution in part being caused by harmful wood-burning stoves. Ingestion of kerosene is harmful or fatal. This process assists in the destruction of harmful pathogens. It is also believed to cleanse an area of harmful or negative energies. It was thought that dairy products were especially at risk from harmful spirits.