The phrase "use of chemicals" refers to the application or employment of chemical substances for a specific purpose, such as in industrial processes, agriculture, medicine, and other fields. Full definition
The government's justification relies on the repeated use of chemical weapons by the Syrian government against its own people. (newlawjournal.co.uk)
The materials that make up the crib are eco-friendly and sturdy, the joints are securely assembled and the finish is absolutely smooth without use of chemical based toxic paints. (parenthood.guide)
This may be explained by use of the chemical in personal care products for women, including nail polish. (mindbodygreen.com)