The present invention provides a method of sanitizing a handle on a mobile push cart which includes the steps of positioning, in at least one preselected location, a storage container capable of holding a predetermined plurality of covers, obtaining, from the storage container one cover and detachably positioning the cover onto the handle of the mobile push cart. The invention also provides a method of advertising product or event in combination with the mobile push cart, wherein advertising information is provided on the cover which is detachably positioned onto the handle of the mobile push cart. The invention additionally provides a novel protective cover for the mobile push cart which includes provisions for supporting various accessories usable in a supermarket and the like.