Yes! Cert. has been tested & proven in a lab to be effective against all enveloped viruses and this would include any variant of SARS-CoV-2 (which causes Covid).
An 'enveloped virus' is any virus that has an outer wall, or 'envelope' around it. Cert. tablets are a powerful combination of both disinfectant and detergent, both of which are necessary to break down that outer wall and destroy the RNA of the virus.
You need BOTH disinfection and detergent, and Cert. is a carefully dosed combination of the two which is effective against Covid for 48 hours once dissolved in tap water.
It doesn't matter how the SARS-CoV-2 mutates - as long as it remains an enveloped virus, Cert. will continue to effectively destroy it!
Be Safe, Be Certain.