Make it efficient.
The biocide properties of copper are very well known since old times. Several recent studies confirm the efficacy of nano-copper particles in killing viruses (Human Corona Virus, among them) Bacteria and other pathogens.
Make it efficient.
Copper nanoparticles stabilized in cationic surfactant.
Verified bactericidal efficiency in microbiological assay with gram (+) and gram (-) strains