Yes, thank you. As I said in the original post... chlorine. NOT ClO2. To add another quotation "Incubation of oocysts for up to 2 hours in household bleach failed to decrease infectivity [19]."

Though I'm not sure how ClO2 can be used in the field, since it appears that the gaseous form is used for water purification, and the liquid form for hard surfaces (according to the EPA sheet).