Methods of forming garments having one or more stretchable conductive ink patterns. The methods of combating Escherichia coli andor Enterococcus faecium in an aqueous medium, and biofilms such as formed by Pseudomonas aeruginosa on surfaces contacted by the aqueous medium, involve introducing into the medium a biocidally effective amount of 1,3-dibromo-5,5-dimethylhydantoin. The first stage includes an imaging tabletop.