a method of producing stable disinfectant for use as a biocidal composition . the method comprises : a ) providing reagents , b ) asynchronously feeding the at least two of the reagents into a wide space , and c ) allowing all the reagents to conic into contact and mix with each other . the reagents comprise : a ) an amine source of disinfectant in concentrated form , b ) an oxidizing halogen compound in concentrated form , and c ) a diluent . the use of asynchronous feeding and a wide space results in a dynamic biocide regimen . this regimen results in a changing environment that infestations have difficulty adapting to . this method also imparts superior results due to the avoidance of channeling effects which would otherwise weaken the effects of the biocide .