Biocide 100 Virus Sterilant Disinfectant cannot be used in a fogger including a ULV fogger. It is a ready to use formulation that should only be applied as directed on the label. After area is treated, wipe off with a clean cloth, mop or sponge and thoroughly rinse surfaces with potable water. Heavily soiled areas will need to be cleaned prior to the use of the product.