The following is provided by Health Canada.
Since the beginning of the pandemic, there has been a significant increase in the sale and use of ultraviolet radiation-emitting (UV) devices and ozone-generating devices intended to control or kill bacteria and viruses (including SARS-CoV-2 – the virus that causes COVID-19) on surfaces and objects, and in water and air. These devices have not been assessed to determine if they can be used safely or if they work as claimed.
Due to serious health and safety concerns, on June 7, 2021, the Minister of Health made an Interim Order that brings certain UV radiation-emitting devices and ozone-generating devices under the Pest Control Products Act. The Interim Order requires that these devices be subject to safety and efficacy assessments and registration or authorization prior to entering the Canadian market.
The Minister of Health may make an interim order under subsection 67.1(1) of the Pest Control Products Act if the Minister believes that immediate action is required to deal with a significant risk, direct or indirect, to health, safety or the environment.