O.K. Sorry it took so long, but I had a real aspiration to empty 'em myself. So I capped a couple with crown caps, and they don't leak, but I couldn't get them to screw off short of using pliers. The bottles were Woodchuck Draft Cider, and had a typical screw-type mouth. The caps I have are left over from the '60's and have a cork gasket; don't know if that part matters, but it's working. ... anything else you need me to empty?