Just visited your site for the first time, so I hope this tip is not "Old Hat"
Using an old Aluminium saucepan, heat up a mixture of water and salt. Drop your silverware (or jewellry) into it and an electrolytic action takes place, instantly removing the silver tarnish. Note that the tarnish then stains the pan, so it is important to use an old one, and it MUST be aluminium. The tarnish will disappear from every crevice.
