What temperature freezes and kills staph?

I have a staph infection in a surgical incision and am on an antibiotic. I want to disinfect my house so I don't reinfect myself. I have 2 ice packs that cannot be washed, as they are herbal in a cloth sack and I want to know if the freezer is enough to kill the germ or if there is something else I need to do-other than throw them out.