formulation of the antimicrobial solution is presented in table 1 the components of the exemplary formulation of the antimicrobial solution as presented in table 1 are listed by the component the cas chemical abstracts service number of the component the percentage of the component by weight in the exemplary formulation table 1 includes an exemplary range for each component in percentage by weight as may be found in other exemplary formulations of the antimicrobial solution the cas number is a unique numerical identifier assigned to the component by the chemical abstracts service that uniquely identifies the component the chemical abstract service has assigned a unique cas number to each chemical substance described in the open scientific literature the registry maintained by the chemical abstract service includes chemical substances described from at least 1957 through the present and encompasses more than 81 million organic and inorganic substances and 64 million protein and dna sequences the registry is searchable by cas number formulations of the antimicrobial solutions with components obtained from sources other than the specified sources differing concentrations of the components or components differing from that presented in exemplary table 1 may be possible without departing from the scope of this invention as defined in the claims deionized water qs constitutes at least 90 of the antimicrobial solution by weight in the exemplary formulation of table 1 accordingly the exemplary antimicrobial solution of table 1 may be considered as dilute grapefruit seed extract gse which is the plant based antimicrobial extract compound is commercially available in liquid form as p 50 from chemie research and manufacturing po box 181279 casselberry fla 32718 the gse in the form of p 50 is exemplary and other generally equivalent gse from other suppliers may be used in other implementations of the antimicrobial.