12 pack makes 3 gallons of ready-to-use solution Each 1/2 oz of concentrate makes a quart (32 oz) of ready-to-use solution No-mess mixing, measuring, and pouring Economical, up to 80% less expensive than ready-to-use formulas Lemon-scented, broad- spectrum surface disinfectant/deodorizer safe to use on all hard non-porous surfaces Available in packs of 6 1/2 oz which is equivalen to 1-1/2 gallons of ready to use solution.