Combine both the laundry additive and the concentrate and save some money. This is the refill for the get it all package for those who already have the jug and sprayer. This is enough concentrate to make a gallon jug and the quart sprayer plus you get the quart of Laundry Additive. Instructions are on the label. Just make sure you have your original sprayer and jug or a dedicated HDPE container. Never mix chemicals in suspect containers.