You can use ozone to treat store veggis, it makes them last longer as well , put veggies in ceramic borl with water covering them, stick in ozone wand let sit for several hous. Shake off excess water and put into storage containers. I still do this in winter when I want something from store.
You can even do meat with it though ground products not really well. Some cheap meats uou will have to change water two or three times till the bubbling stuff stops comming, if you put residue to flame (outside) stinks like a garbage fire. Meat we grow does not do this at all same with veggies.